Pythagoras Lab

Mathematics discovery

Pythagoras Lab

Today's mission

Pythagoras Lab: Look and choose

Pythagoras Lab: Choose the small squares that completely cover the big square.

Notice Try Show
A large square outline and equal unit squares that snap into rows

What do you think?

Grown-up guide

Learning goal

Compose and compare square regions without introducing a formal theorem prematurely.

Listen for

Counting pieces alone proves two shapes cover the same area even when pieces overlap.

Teaching move

Keep the K-2 goal on composing square area and reserve side-length relationships for later grades.

Standards under review

CCSS.MATH.1.G.A.2 / CCSS.MATH.2.G.A.2

Educator review is required before verified-release status.

Original World tools