How to play
Each round shows one shape on the blueprint — a rectangle, square, triangle, pentagon or hexagon — with its measurements labelled. The question above it asks how many sides the shape has, what its perimeter is, or what its area is, and three hexagon buttons hold the possible answers. Tap the answer you think is right, or press 1, 2 or 3: a correct answer locks in and brings up the next shape, a wrong one costs a life and lets you try the same shape again. Ten correct answers wins the round.
What your child will learn
- Identify and classify 2D shapes
- Measure perimeter and area
Skills practiced
- Spatial reasoning
- Measurement
Why this age range
Best in grades 3–4. Perimeter and area of rectangles and squares are grade-3 and grade-4 standards, and naming pentagons and hexagons is a grade-3 standard. Younger children do not yet have the multiplication facts the area questions need; older children will find the numbers small. Area of a triangle is held back until grade 5, because halving base × height is a later standard. Sessions are short by design — two to three minutes.
Curriculum standards
- CCSS.MATH.2.G.A.1
- CCSS.MATH.3.MD.D.8
Notes for parents
Shape Builder is a quick-fire geometry quiz rather than a drawing tool, and the wrong answers on offer are chosen deliberately: they are the mistakes children actually make — the perimeter offered where the area was asked for, or the two dimensions simply added together. If your child picks one of those, it tells you exactly which idea to revisit. "Perimeter is the walk around the edge; area is the space inside" is usually the sentence that fixes it. After two misses in a row the game shows the worked formula, so it is worth letting your child miss twice rather than prompting them straight away.