About Quadrilateral
Explore the properties of and relationships between named four-sided shapes by moving sides and corners of a quadrilateral.
How to play Quadrilateral
Everything is hands-on: drag, click and experiment — the simulation reacts instantly. Explore the properties of and relationships between named four-sided shapes by moving sides and corners of a quadrilateral.
Questions & answers
- What is Quadrilateral?
- Quadrilateral is a free interactive simulation from PhET Interactive Simulations (University of Colorado Boulder) that you can play right in your browser on crumble.lol — no downloads and no sign-up. Explore the properties of and relationships between named four-sided shapes by moving sides and corners of a quadrilateral.
- What can kids learn from Quadrilateral?
- It helps kids explore: predict how moving a side or corner will change or maintain the current named shape. determine the similarities and differences between quadrilaterals by looking at their side, angle, and diagonal measures and understand that the shared attributes can define a larger category. classify quadrilaterals based on the presence or absence of parallel or perpendicular lines, or the presence or absence of equal or right angles. classify quadrilaterals in a hierarchy based on shared geometric properties.
- What age is Quadrilateral good for?
- It is designed for elementary school (roughly ages 5–10) up to middle school (roughly ages 10–14), and curious kids outside that range can absolutely enjoy poking around it too.
- Is Quadrilateral free to play?
- Yes — Quadrilateral is completely free on crumble.lol and runs fully in your browser on computers and tablets.