Starting a new lesson and need a quick overview of the upcoming concepts? Or are you starting a new lesson and want students to quickly review prerequisite skills? Well, these 4-6 minute tutorials are just what you need.

Why are some numbers rational and some irrational? That’s an important question for all students to understand. The tutorial, Real Number Hierarchy, guides students through a comparison of the two types of numbers using examples.

Many students are familiar with the Pythagorean Theorem, but do they understand why the theorem is true? The Pythagorean Theorem tutorial animates a proof of the theorem using squares, and then shows them how to use the theorem in a real-world situation.

Starting a lesson on probability? Use the tutorial, Basic Probability, to engage students in conversation. After students listen to a thorough definition of probability, stop the tutorial at the 1:33 mark and allow them to discuss in groups whether or not the probability can ever be greater than 1. Once students have discussed an answer, continue the tutorial’s explanation.

Have you discussed triangle congruency and are now ready to discuss that corresponding parts of congruent triangles are congruent? Use the CPCTPC tutorial to explain how to use the statement to complete proofs and solve problems involving congruent triangles.

Each tutorial concludes with a short online quiz to check student knowledge—perfect if you want to use these tools as part of a flipped lesson or to check prerequisite understanding.

Check out these other math tutorials.

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