MathematicsK-2 reference
Place Value Lab
Connect a spoken or written number to a quantity built from objects and groups.
one-to-one counting: move countersLabPath
Assign a WorldExplore the Worlds
100 launchable experiences are open for K-2 review. All 100 World transformations remain visible.
27 Worlds
K-2 · MathematicsMathematicsK-2 reference
Fraction Forge
Make equal shares and explain how the whole is divided without introducing symbolic procedures too early.
cardinality to 10: say the totalMathematicsK-2 review candidate
Algebra Lab
Represent an unknown quantity with a concrete box and preserve equality through matching moves.
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Equation Solver
Treat an equation as a statement that two quantities are the same.
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Proportion Lab
Build fair one-to-one relationships before using formal ratios.
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Graphverse
Connect a changing situation with a picture graph that rises, falls, or stays level.
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Geo Proof
Use visible shape properties to justify why a claim remains true after moving or turning a shape.
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Proof Builder
Build a short explanation by connecting a claim to observable evidence.
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Word Problem Engine
Represent a story situation with objects, actions, and an equation appropriate to the grade.
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Measure Lab
Compare measurable lengths by aligning objects to the same starting point.
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Multiply Forge
Use equal groups to describe repeated quantities before symbolic multiplication.
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Division Lab
Share a collection into equal groups and check for leftovers.
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Decimal Bridge
Compose a whole from equal parts and connect tenths to familiar measurement contexts in Grade 2.
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Pattern Lab
Identify, extend, and describe repeating and growing visual patterns.
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Shape Builder
Compose larger shapes from smaller shapes and decompose them in multiple ways.
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Coordinate Grid
Describe position and movement using directional language and an ordered grid path.
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Angle Lab
Compare turns and corners using square-corner and quarter-turn benchmarks.
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Surface & Volume Lab
Compare how containers cover space and how faces can be composed from shapes.
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Probability Lab
Describe chance using possible, impossible, and more or less likely outcomes.
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Linear Lab
Notice constant additive change in a concrete growing pattern.
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Pythagoras Lab
Compose and compare square regions without introducing a formal theorem prematurely.
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Exponent Lab
Recognize repeated doubling as a growing pattern without symbolic exponent notation.
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Function Intro
Describe a consistent input-output rule using a concrete machine.
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Time Money Units
Order familiar events and connect clocks and coins with their everyday purposes.
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Ratio Rate
Compare repeated one-for-each relationships in familiar contexts.
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Expression Lab
Connect different action stories that produce the same quantity.
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Inequality Lab
Compare two quantities using more, fewer, and the same before introducing symbols.
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