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.

**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.

Check out these other math tutorials.

Solving Absolute Value Equations

Midpoint Formula

Vertical and Horizontal Lines

Division by Zero

Simplified Radicals

Systems of Linear and Nonlinear Equations

Real-World Examples of Quadratic Functions

Evaluating Expressions

Area and Circumference of a Circle

Area of Triangles and Quadrilaterals

Slope

Surface Area of Prisms and Cylinders

Parallel and Perpendicular Slopes

Similarity and Proportions

Measures of Central Tendency