Mathematics, grade 4, mapped
123 claims across 5 strands · 134 of 156 skills in grades 2-4 appear here
39 more claims reach back to a grade below this window. They are named in the lists below and not drawn — the picture holds grades 2-4 and nothing else.
Pick a skill to light what it rests on.
Algebraic reasoning
- 3.5.D rests on 2.7.C solving for a missing factor is the missing-term work moved onto a different operation
- 4.5.A rests on 3.5.B a strip diagram for a multi-step problem is the one-and-two-step diagram with more strips in it
- 4.5.A rests on 3.5.A a multi-step strip diagram with a letter for the unknown takes one-and-two-step addition and subtraction already representable with equations
- 4.5.A leans on 3.5.D a letter standing for the unknown leans on the unknown already being something to solve for
- 4.5.B rests on 3.5.E an input-output table is the table of number pairs with the rule written out
- 4.5.D rests on 4.5.C solving a perimeter or area problem takes the formula as already worked out from a model
- 2.7.B rests on 2.2.A from another strand naming the value of a digit is place value itself, and a hundred more is a change in one column
- 3.4.I leans on 2.7.A from another strand a last-digit rule and a pile of objects paired off answer the same question two different ways
- 3.5.B leans on 3.4.E from another strand a strip diagram is one more way of drawing the equal groups the fact work makes familiar
- 3.5.D rests on 3.4.J from another strand a missing factor takes multiplication and division as two views of one fact
- 3.5.A rests on 2.4.C from another strand an equation for a two-step problem comes after the within-1,000 work is solvable
- 3.5.C leans on 3.4.E from another strand reading 3 x 24 as a comparison leans on multiplication already meaning equal groups
- 3.7.B leans on 2.7.C from another strand a missing side is the unknown-term reading with a perimeter standing in for the total
- 4.5.C rests on 3.7.B from another strand the 2l + 2w shorthand comes out of having added the four sides one at a time
- 4.5.C rests on 3.6.C from another strand the l x w formula names what counting rows of unit squares was already doing
- 4.5.D leans on 4.4.D from another strand a rectangle 24 by 16 leans on two-digit multiplication being reliable
- 4.7.E leans on 2.7.C from another strand a missing angle is the unknown-term reading with the whole angle standing in for the total
- 2.7.B rests on 1.5.C from grade 1, below this window stepping by a hundred works the way stepping by ten does once the columns are visible
- 2.7.C rests on 1.5.F from grade 1, below this window an unknown anywhere in the sentence is the grade 1 equation work inside a story
- 2.7.C rests on 1.5.D from grade 1, below this window an unknown inside a story needs the story written as an equation
- 2.7.A leans on 1.5.B from grade 1, below this window pairing a pile off answers even or odd on its own, and counting the pairs in twos speeds it up
Data analysis
- 2.10.C rests on 2.10.A reading a value off a chart needs the bar length or picture count to mean something
- 2.10.D rests on 2.10.C a conclusion comes after the plain questions are answerable
- 3.8.A rests on 2.10.B a scaled interval is the interval-of-one-or-more work with bigger steps
- 3.8.B rests on 3.8.A a two-step question needs the scaled display to be readable
- 3.8.B rests on 2.10.C solving from a scaled graph is the interval-of-one work with a multiplier in it
- 4.9.A rests on 3.8.A a stem-and-leaf plot is one more summary of a set the frequency table already organises
- 4.9.B rests on 4.9.A answering from a dot plot takes the plot as already readable
- 4.9.B leans on 3.8.B the scaled-graph questions are these with whole numbers only
- 4.9.A leans on 4.3.G from another strand a dot plot marked in halves leans on fractions already having places on a line
- 2.10.A leans on 1.8.B from grade 1, below this window drawing a bar is one good way to see what its length stands for, and being told is another
- 2.10.B rests on 1.8.B from grade 1, below this window four categories with intervals is the picture-graph work with more in it
- 2.10.C rests on 1.3.F from grade 1, below this window writing a question about a graph is the compose-a-situation work with the numbers read off
- 2.10.D rests on 1.8.C from grade 1, below this window making a prediction extends the conclusion-drawing the year before asks for
Geometry and measurement
- 2.8.E leans on 2.8.D cutting a rectangle into triangles and building one out of triangles are the same seam seen twice
- 3.6.A rests on 2.8.B sorting figures and solids together comes after the solids are sorted on their own
- 3.6.A rests on 2.8.C adding the flat figures takes the polygon sorting as already in hand
- 3.6.B rests on 3.6.A picking the quadrilaterals out needs sorting by attribute to be second nature
- 3.6.C rests on 2.9.F multiplying rows by columns comes after a rectangle is covered and counted by hand
- 3.6.D rests on 3.6.C adding areas together takes one rectangle on its own as already findable
- 3.6.D rests on 2.8.E breaking a composite into rectangles is the decomposing work with area attached
- 3.6.E leans on 3.6.D knowing areas add is what lets four equal parts of one figure be checked against four of another
- 2.9.D rests on 2.9.A reading a ruler works on a standard unit that is already familiar
- 2.9.E rests on 2.9.D estimating comes after enough lengths are measured to have a sense of the size
- 3.7.B leans on 2.9.D the sides often arrive as numbers in the problem, and measuring them is the other way in
- 3.7.D leans on 3.7.E deciding whether to weigh the flour or measure it out is easier once both have been tried
- 3.7.C rests on 2.9.G adding two intervals takes the clock as already readable to the minute
- 4.6.B leans on 2.8.E a line of symmetry is the halving cut with the two parts landing on each other
- 4.6.C rests on 4.6.A sorting triangles by their angles takes the right angle as already identifiable
- 4.6.D rests on 4.6.A classifying on parallel and perpendicular takes both as named things to look for
- 4.6.D leans on 3.6.B the quadrilateral sorting is this with a shorter list of attributes to check
- 4.7.A rests on 4.6.A an angle cut out of a circle takes the vertex and the two rays as already named
- 4.7.B rests on 4.7.A one degree is one of 360 of those cut-out parts, so the part comes first
- 4.7.C rests on 4.7.B reading a protractor takes the degree as already meaning something
- 4.7.C leans on 2.9.D a protractor is a scale read to the nearest mark, the way a ruler is
- 4.7.D rests on 4.7.C drawing to a given measure is the protractor reading run the other way
- 4.7.E rests on 4.7.B two adjacent angles add because each is a count of degrees out of the same circle
- 4.8.A leans on 2.9.B ranking a metre against a centimetre leans on the inverse of unit size and count already being stated
- 4.8.B rests on 4.8.A a conversion runs in the direction the relative sizes give it
- 4.8.C leans on 3.7.C time is the quantity that does not run on base ten, and the minute intervals are where that shows
- 4.8.C leans on 3.7.E a problem about liquid volume or mass leans on those quantities already being obtainable with a tool
- 4.4.C leans on 3.6.C from another strand the area model is the rows-times-squares picture with the squares left uncounted
- 3.3.A leans on 2.9.C from another strand putting a fraction on a number line leans on the line already carrying distances
- 3.7.A rests on 3.3.A from another strand a fraction as a distance from zero takes it as already a point on the line
- 4.3.E leans on 3.6.E from another strand combining pictured parts takes the whole already decomposed into named equal-area parts
- 4.3.G rests on 3.7.A from another strand tenths as a distance from zero extends the halves, fourths and eighths already placed that way
- 3.6.C rests on 3.4.D from another strand seeing a rectangle as rows of squares is the array work in a different picture
- 3.6.E rests on 3.3.C from another strand calling one of four equal parts a fourth of the whole is the unit fraction doing the naming
- 2.9.C leans on 2.2.E from another strand reading a distance on a line leans on the number already having a place on it
- 3.7.B rests on 2.4.B from another strand finding a missing side runs on two-digit addition and subtraction being reliable
- 3.7.B leans on 2.7.C from another strand a missing side is the unknown-term reading with a perimeter standing in for the total
- 4.5.C rests on 3.7.B from another strand the 2l + 2w shorthand comes out of having added the four sides one at a time
- 4.5.C rests on 3.6.C from another strand the l x w formula names what counting rows of unit squares was already doing
- 4.7.A leans on 3.3.C from another strand a part of a circle leans on a whole already being something that comes apart into parts you can name
- 4.7.E leans on 2.7.C from another strand a missing angle is the unknown-term reading with the whole angle standing in for the total
- 4.8.B leans on 4.4.B from another strand metres into centimetres is a product of 100 with a unit attached
- 4.8.C leans on 4.4.H from another strand the multiplication and division measurement problems are these with a unit on every number
- 2.8.A rests on 1.6.C from grade 1, below this window building a shape to a specification takes being able to make the shapes at all
- 2.8.B rests on 1.6.E from grade 1, below this window sorting solids works on solids the year before has already named
- 2.8.C rests on 1.6.D from grade 1, below this window sorting by side count works on shapes that already have names and attributes
- 2.8.D rests on 1.6.F from grade 1, below this window composing to a given property is the joining work that made target shapes
- 2.9.A leans on 1.7.A from grade 1, below this window a ruler laid along a table is where the idea of a fixed unit tends to turn up early
- 2.9.B rests on 1.7.C from grade 1, below this window the inverse relationship is what the two-unit comparison shows, stated as a rule
- 2.9.D rests on 1.7.D from grade 1, below this window reading to the nearest mark is whole-unit reporting with a scale printed on it
- 2.9.G rests on 1.7.E from grade 1, below this window minutes come after the hour and the half hour are readable on a face
- 2.9.A rests on 1.7.B from grade 1, below this window an inch is still a unit laid end to end with no gaps, and a standard one
- 2.9.F rests on 1.7.B from grade 1, below this window covering a rectangle with no gaps or overlaps is the end-to-end unit iteration turned sideways
- 4.7.B leans on 1.7.B from grade 1, below this window a degree is still a same-size unit counted off, bent around a vertex instead of laid along an edge
Number and operations
- 2.2.F leans on 2.2.E naming the number at a marked point and placing one on a blank line are the same correspondence either way
- 3.2.A rests on 2.2.A the ten-thousands column extends the composing the 1,200 work introduces
- 3.2.D rests on 2.2.D ordering to 100,000 is the 1,200 comparison with two more places in it
- 3.2.C rests on 2.2.E seeing which two multiples a number sits between is the open number line with landmarks on it
- 3.2.B leans on 3.2.A the ten-times pattern and the column building explain each other, in either order
- 4.2.A rests on 3.2.B the one-tenth direction is the base-ten description read to the right of the ones column
- 4.2.B rests on 4.2.A expanded notation out to the hundredths takes each column as ten times the one on its right
- 4.2.C rests on 3.2.D comparing to a billion is the to-100,000 comparison with four more places to sort on
- 4.2.D rests on 3.2.C rounding to a named place works from the two consecutive multiples a number sits between
- 4.2.E leans on 4.2.A a tenths grid leans on the column right of the ones being worth a tenth, and just as often is how that lands
- 4.2.E leans on 2.5.B a dollar sign and two digits after the point is the first decimal most children read, though a grid works too
- 4.2.F rests on 4.2.E ordering two hundredths grids takes the grids as already drawable
- 4.2.F leans on 4.2.C comparing left to right across the places is the whole-number move carried past the decimal point
- 4.2.G rests on 4.2.E calling the shaded part three tenths and 0.3 at once takes one model that holds both names
- 4.2.G leans on 3.3.C tenths are the unit fraction with b at ten, and grade 3 writes that definition for any whole number b
- 4.2.H rests on 4.3.G reading a decimal off a marked point takes tenths and hundredths as already having places on the line
- 4.2.H leans on 3.3.B naming the point rather than placing it is the fraction-line reading with a decimal on the answer
- 2.4.B leans on 2.4.A a column of two-digit numbers comes apart into single-digit sums a child already knows
- 2.4.B rests on 2.2.A an algorithm based on place value works on a number seen as hundreds, tens and ones
- 2.4.C rests on 2.4.B solving within 1,000 runs on two-digit strategies that are already reliable
- 2.4.D leans on 2.4.C posing a situation and solving one feed each other, and inventing is often the way into solving
- 3.4.A rests on 2.4.C fluency is the same within-1,000 work once the strategies stop needing thought
- 3.4.B rests on 3.2.C rounding starts from seeing which two tens or hundreds a number falls between
- 4.4.A rests on 3.4.A the standard algorithm is the within-1,000 fluency written down in columns
- 4.4.A leans on 4.2.B lining the decimal points up leans on hundredths already having a column of their own
- 4.4.G rests on 4.2.D estimating with rounded numbers takes rounding to a named place as already doable
- 4.4.G leans on 3.4.B compatible numbers turned up the year before on sums, and the thousands are the only new part
- 2.5.B rests on 2.5.A writing an amount in dollars and cents comes after the total is worked out
- 3.4.C rests on 2.5.A adding bills to the pile is the up-to-a-dollar counting with larger values in it
- 2.6.B leans on 2.6.A joining equal sets and sharing a set out are the same picture read from either end
- 3.4.F rests on 3.4.D recall comes after the array has made the answer findable
- 3.4.G leans on 3.4.F seven twenty-fours splits into seven twenties and seven fours, and both go faster when they are known
- 3.4.G rests on 3.2.A breaking a two-digit factor apart works from seeing it as tens and ones
- 3.4.H rests on 2.6.B working out the size of each share is the division situation with a number on the answer
- 3.4.J leans on 3.4.F the division facts come with the multiplication ones, and skip counting finds the quotient too
- 3.4.K leans on 3.4.F recall is one of the four routes a division problem allows, alongside objects, models and properties
- 3.4.K rests on 3.4.H a sharing problem needs the size of each group to be worked out
- 3.4.D rests on 2.6.A counting six groups of four takes the equal-groups situation as already set out
- 3.4.E rests on 3.4.D drawing six by four to show a fact comes after having counted six groups of four objects
- 4.4.B rests on 4.2.A multiplying by ten shifts every digit one column left, which is the ten-times relationship itself
- 4.4.C leans on 3.4.G two two-digit factors is partial products with the second number broken apart as well
- 4.4.D rests on 4.4.C the standard algorithm is the partial products of the array collected into columns
- 4.4.D leans on 4.4.B the second row of a two-digit multiplication is a product of ten, and knowing why it shifts helps
- 4.4.E rests on 3.4.J drawing a four-digit quotient takes division and multiplication as two views of one fact
- 4.4.E leans on 3.3.E a quotient is a share handed out, and sharing pictorially is where quotients start
- 4.4.E leans on 4.4.C an area model read from the product back to a missing side is the same rectangle either way
- 4.4.F rests on 4.4.E long division is the area model recorded step by step
- 4.4.F leans on 4.4.D each step of a division algorithm multiplies back, and a reliable product makes that quick
- 4.4.H rests on 4.4.F fluency with two-step problems takes the division algorithm as already working
- 4.4.H leans on 3.4.K the two-step problems within 100 are these with smaller numbers and no remainder to read
- 2.3.B rests on 2.3.A noticing that more parts makes each part smaller comes after the parts are made
- 2.3.C rests on 2.3.A counting past one whole needs the parts to have names already
- 2.3.D leans on 2.3.A spotting a false eighth and cutting a true one grow together, and judging often comes sooner
- 3.3.C rests on 2.3.A naming one part of a whole takes the whole as already cut into that many equal parts
- 3.3.A leans on 3.3.C the unit fraction is one road to three quarters, and three parts out of four is the other
- 3.3.B rests on 3.3.A reading a fraction off a line is the reverse of putting one there
- 3.3.D rests on 3.3.C building a fraction out of unit parts takes the unit part as understood
- 3.3.F rests on 3.3.A equivalence needs two fractions drawable beside each other
- 3.3.G rests on 3.3.F the same-point test comes after the equivalent pairs are built
- 3.3.H rests on 2.3.B comparing eighths with fourths runs on knowing more parts makes each one smaller
- 3.3.H leans on 3.3.A a picture settles the comparison when reasoning from the denominator alone runs out
- 3.3.E leans on 2.6.B sharing an object among people is the equal-sets work with a fraction as the answer
- 3.3.E rests on 3.3.A sharing three cookies among four people needs three fourths to be drawable
- 4.3.A rests on 3.3.D five thirds is the same sum of unit parts with the count allowed past the denominator
- 4.3.B rests on 4.3.A finding a second way to split it takes one way as already written down
- 4.3.C rests on 3.3.G deciding whether two are equivalent applies the same-point test rather than building the pair
- 4.3.D rests on 3.3.H unlike numerators and unlike denominators is the same-one-or-the-other comparison with both changed at once
- 4.3.D leans on 4.3.C rewriting one fraction to match the other leans on equivalence being testable first
- 4.3.E rests on 4.3.A adding fifths is counting unit parts, which is what a sum of 1/b already says
- 4.3.E leans on 4.3.G the number line the statute builds toward is easier once fractions sit on one as distances
- 4.3.F leans on 4.3.E having a worked sum to check against helps, though a benchmark estimate is made without one
- 4.3.F leans on 4.3.D putting a fraction against one half leans on comparing two unlike fractions being familiar
- 4.3.G leans on 4.2.E the decimal half of this leans on tenths and hundredths already having models behind them
- 2.7.B rests on 2.2.A from another strand naming the value of a digit is place value itself, and a hundred more is a change in one column
- 3.4.I leans on 2.7.A from another strand a last-digit rule and a pile of objects paired off answer the same question two different ways
- 3.5.B leans on 3.4.E from another strand a strip diagram is one more way of drawing the equal groups the fact work makes familiar
- 3.5.D rests on 3.4.J from another strand a missing factor takes multiplication and division as two views of one fact
- 3.5.A rests on 2.4.C from another strand an equation for a two-step problem comes after the within-1,000 work is solvable
- 3.5.C leans on 3.4.E from another strand reading 3 x 24 as a comparison leans on multiplication already meaning equal groups
- 4.4.C leans on 3.6.C from another strand the area model is the rows-times-squares picture with the squares left uncounted
- 3.3.A leans on 2.9.C from another strand putting a fraction on a number line leans on the line already carrying distances
- 3.7.A rests on 3.3.A from another strand a fraction as a distance from zero takes it as already a point on the line
- 4.3.E leans on 3.6.E from another strand combining pictured parts takes the whole already decomposed into named equal-area parts
- 4.3.G rests on 3.7.A from another strand tenths as a distance from zero extends the halves, fourths and eighths already placed that way
- 3.6.C rests on 3.4.D from another strand seeing a rectangle as rows of squares is the array work in a different picture
- 3.6.E rests on 3.3.C from another strand calling one of four equal parts a fourth of the whole is the unit fraction doing the naming
- 2.9.C leans on 2.2.E from another strand reading a distance on a line leans on the number already having a place on it
- 3.7.B rests on 2.4.B from another strand finding a missing side runs on two-digit addition and subtraction being reliable
- 4.5.D leans on 4.4.D from another strand a rectangle 24 by 16 leans on two-digit multiplication being reliable
- 4.7.A leans on 3.3.C from another strand a part of a circle leans on a whole already being something that comes apart into parts you can name
- 4.8.B leans on 4.4.B from another strand metres into centimetres is a product of 100 with a unit attached
- 4.8.C leans on 4.4.H from another strand the multiplication and division measurement problems are these with a unit on every number
- 4.9.A leans on 4.3.G from another strand a dot plot marked in halves leans on fractions already having places on a line
- 4.10.B leans on 3.4.C from another strand profit subtracts cost from money taken in, which takes a collection of coins and bills already valuable
- 2.2.A rests on 1.2.B from grade 1, below this window composing to 1,200 is the same hundreds-tens-ones move the 120 work sets up
- 2.2.B rests on 1.2.C from grade 1, below this window expanded form to 1,200 reads the way it does to 120, with one more column in it
- 2.2.D rests on 1.2.G from grade 1, below this window comparing to 1,200 with symbols is the to-100 symbol work over a wider range
- 2.2.E rests on 1.2.F from grade 1, below this window placing a number on an open line is the ordering the 120 number lines already ask for
- 2.2.C rests on 1.2.D from grade 1, below this window generating a greater or lesser number anywhere up to 1,200 is the move the 120 range asks for
- 2.2.D rests on 1.2.F from grade 1, below this window ordering to 1,200 is the 120 ordering with another column to sort on
- 2.4.A rests on 1.3.D from grade 1, below this window automatic recall comes after the strategies that make the answer findable
- 2.4.B leans on 1.5.G from grade 1, below this window rearranging addends to make the arithmetic easier is the properties work from the year before
- 2.4.C rests on 1.3.B from grade 1, below this window a multi-step word problem is the joining and separating work with bigger numbers in it
- 2.4.D rests on 1.3.F from grade 1, below this window writing a story for a number sentence is the within-20 version over a wider range
- 2.5.A rests on 1.4.C from grade 1, below this window a collection up to one dollar adds the quarter to the pennies, nickels and dimes already counted
- 2.5.B rests on 1.4.B from grade 1, below this window the dollar sign and the decimal point extend the cent symbol the year before introduces
- 2.6.A leans on 1.5.B from grade 1, below this window counting in fives is one way to total equal sets, and laying the sets out is another
- 2.6.B leans on 1.6.G from grade 1, below this window sharing a set out evenly is the fair-shares idea applied to a count rather than a shape
- 2.3.A rests on 1.6.G from grade 1, below this window eighths are the fair-shares work from the year before, cut once more
- 2.3.D rests on 1.6.H from grade 1, below this window sorting examples from non-examples is the halves-and-fourths judgement with eighths added
Personal financial literacy
- 2.11.E leans on 2.11.D lending is the borrowing situation seen from the other side of the table
- 3.9.E leans on 2.11.A planning to save leans on having seen savings add up over time
- 3.9.C leans on 2.11.B weighing a spending decision leans on saving already being one of the options
- 3.9.D leans on 2.11.D credit leans on borrowing already being something with a careful and a careless way
- 4.10.B leans on 2.11.F profit leans on the cost to produce the thing already being something to work out
- 4.10.C leans on 3.9.E weighing one savings option against another leans on there being reasons to save at all
- 4.10.D leans on 3.9.F splitting an allowance three ways leans on spending, saving and giving already being named decisions
- 4.10.E leans on 2.11.C keeping money safe leans on a deposit and a withdrawal already being different things
- 4.10.E leans on 2.11.E a bank lending leans on lending already being a thing with benefits and costs on both sides
- 4.10.B leans on 3.4.C from another strand profit subtracts cost from money taken in, which takes a collection of coins and bills already valuable
- 2.11.A leans on 1.9.C from grade 1, below this window watching savings add up leans on saving being a separate idea from spending
- 3.9.A leans on 1.9.A from grade 1, below this window connecting work to income leans on income already meaning money earned
- 4.10.A leans on 1.9.C from grade 1, below this window a fixed expense and a variable one are both spending, which leans on spending being its own idea
- 4.10.D leans on 1.9.D from grade 1, below this window setting a share aside leans on giving already being one of the things money does