Reflection of Light With Two Plane Mirrors- Double Mirrors Placed at a Number of Angles

Challenge students' understanding of area and the coordinate plane with this exit ticket exercise. Given the ordered pairs corresponding to the vertices of two triangles, young mathematicians must find the area of the quadrilateral...

Donnie and Steward each created triangles on a coordinate plane and want to know if they have the same area. Young mathematicians use their ability to plot ordered pairs and find the area of triangles to help answer this...

Three letter-sized mini posters can be displayed in your elementary geometry class when teaching about angles. One provides information about degree measurement and additive properties, and the other two define acute, right, obtuse,...

Illuminate your class with this fabulously interactive app about light! Brilliant animation follows a beaming little robot as he teaches youngsters about every glowing object and concept under the sun.

How can geometry learners remember the difference between supplementary and complementary angles? Not only will the video explain how to remember these two angles, but it also demonstrates how to find unknown angles knowing the degree of...

Is there a relationship between the 180º in a triangle and the 180º in a straight angle? Watch how two transversals create one triangle, and prove that the angles in a triangle will always equal 180º. 

Investigate strategies for solving one- and two-step equations. Young scholars watch videos to learn procedures for solving equations. They then practice using an interactive game and, finally, create a presentation to explain what...

When you add two numbers with the same sign on a number line, you move in the same direction. Show your mathematicians that the sum of two positives is always a positive, while the sum of two negatives is always a negative.

Let there be light in your classroom with a video that explains that light travels in waves, the electromagnetic spectrum contains seven colors, and the color of an object depends on which light waves it reflects and absorbs. With...

Organization is the best way to make sure that ratios are set up correctly to be proportional. This video reviews how to solve ratio problems with addition and multiplication, shown in more detail in the prior two videos of this series,...