Online simulations that power inquiry and understanding

World's largest library

of math & science simulations

Gizmos are interactive math and science simulations for grades 3-12. Over 400 Gizmos aligned to the latest standards help educators bring powerful new learning experiences to the classroom.

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Gizmo of the Week

Improper Fractions and Mixed Numbers

Suppose you are planning a pizza party. How many pizzas do you need to buy? And how much will be left over? The Improper Fractions and Mixed Numbers Gizmo represents fractions as circular area models ...

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Build deep

conceptual understanding

Gizmos use an inquiry-based approach to learning that has been validated by extensive research as a highly effective way to build conceptual understanding.

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Preparing teachers

for success

When teachers effectively integrate Gizmos into instruction they can take learning to new levels. Learn how our professional development services help educators be their best.

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