Fraction Trail
Fractions on the number line, equal parts, comparing, and equivalence Grade 3 · CCSS 3.NF.1 · 3.NF.2 · 3.NF.3
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Fact Workshop & Pattern Hunt
Fact fluency, patterns in the times table, two-step problems, and multiplying by tens Grade 3 · CCSS 3.OA.7–9 · 3.NBT.3
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Equal Groups Zoo
Multiplication and division as equal groups, arrays, and fact families Grade 3 · CCSS 3.OA.1–6
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Clockworks & The Weigh Station
Reading time to the nearest minute, elapsed time, and measuring mass & liquid volume Grade 3 · CCSS 3.MD.1 · 3.MD.2
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Symmetry Studio & Line Detective
A line goes on forever both ways; a ray starts at a point and shoots one way; a segment is a piece with two endpoints. Two lines are parallel if…
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Skyscraper Numbers
In our base-ten system, every place is ten times the place to its right. Ten ones = one ten. Ten tens = one hundred. Ten hundreds =…
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The Sharing Depot
Division is fair sharing or equal grouping. Deal the biggest crates first: hundreds, then tens, then ones. A leftover in one place is traded down into the…
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The Fraction Forge
Two fractions are equivalent when they name the same amount of the same whole. Multiplying (or dividing) the top and the bottom by the same nonzero number cuts…
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Factor Safari
A number’s factor pairs are the rectangles you can make from that many creatures. If a number makes only one rectangle (a single-file line), it is prime;…
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Brick by Brick Bakery
Every fraction is a stack of unit bricks. 5/8 is five copies of 1/8. To add or subtract fractions with the same denominator, just count…
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Array Architect
A multiplication is an area. Break each factor into its tens and ones (or thousands, hundreds, tens, ones), and the big rectangle snaps into smaller rooms whose…
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Angle Ranger & Measure Quest
An angle is a turn. A one-degree angle is 1/360 of a full turn around a point — and n degrees is n one-degree angles stacked. Angle measure is additive: an…
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