Make sure the measurement is right. The interactive provides right triangles with a missing side measurement. Pupils use the given sides and the Pythagorean Theorem to calculate the length of the missing side. After entering the length,...

What do you need to prove triangles are similar? Learners answer this question through a construction exploration. Once they establish the criteria, they use the congruence and proportionality properties of similar objects to find...

Concepts are only valuable if they are applicable. An informative resource uses concepts developed in lessons 26 and 27 in a 36-part series. Scholars write equations and solve for missing side lengths for given right triangles....

What if I can no longer justify area by counting squares? Lead a class discussion to find the area of a rectangular region with irrational side lengths. The class continues on with the idea of lower approximations and...

Prove theorems through an analysis. Learners find the midpoint of each side of a triangle, draw the medians, and find the centroid. They then examine the location of the centroid on each median discovering there is a 1:2 relationship....

Class members explore the estimation of irrational numbers in association with the Pythagorean Theorem. The first lesson of this module challenges pupils to use the Pythagorean Theorem to find unknown side lengths. When the length is not...

Jr. high learners review the basic principles of design (balance, unity, movement, rhythm, pattern, contrast and emphasis) by watching a video by Gerald Brommer. Then they provide "aerobic exercise" for the right side of their brains by...

The various peace proposals, made by both sides, to end the Revolutionary War come under scrutiny in this final lesson of a three-part series on the war. Class members read primary source documents and compare them with military...

Learners discover a method for determining the slope of a line by creating and comparing similar triangles. They fold coordinate grids to make three similar triangles then measure the sides to compare the relationships between the...

This worksheet and tutorial explores solving more complex polynomials by graphing each side separately and finding the point of intersection, identifying the sum and differences of cubes, and solving higher degree polynomials by using...

Middle and high schoolers use the Pythagorean Theorem to determine the length of the sides of a right triangle. They solve distance problems. This one-page worksheet contains 10 multiple-choice problems. This is self-checking worksheet.

In this composite figures worksheet, students solve twelve short answer problems. Students find the area of figures composed of various polygons given a sketch of the figure with side lengths labeled.

Mathematicians use an inquiry method to solve linear equations. In this linear equations lesson plan, students practice solving equations using addition, subtraction, multiplication and division. They solve multi-step equations and...

There is a price for peace. The information and images contained in this 19-slide presentation illustrate the compromises necessary and the costs to those who backed the losing side in the battle for American independence.

Challenge your learners to give clear and concise directions in this shape-name practice activity. In partners, they place a dividing "wall" between them, with pattern blocks and a grid on each side. Partner A places one block at a time...

What’s in a name? Letters, of course! Partners place the letters of their names on a Venn diagram. Letters they have in common are named and placed in the overlapping area of the circles, while letters unique to just one of the names are...

Inside each of these two-dimensional shapes, scholars identify the figure by writing its name. There is a word bank for them to work from, but some shape names are used multiple times. There are six identifiers they use: pentagon,...

Practice finding the area of squares and rectangles. Complete with a grid for third graders to measure each side, this resource will be helpful. Though the shapes vary in size, they all have four sides to make measurement easy. Pupils...

Should schools continue to teach cursive writing? After reading and considering the merits of a series of arguments on both sides of this proposition, class members choose a side of the issue and craft their own argument, drawing support...

Most adults remember learning about the Pythagorean theorem, but they don't all remember how to use it. The emphasis here is on developing an intuitive understanding of how and when to use the theorem. Young mathematicians explore...

Create an urbane battle royal in class with the old Coke vs. Pepsi challenge that develops upper level high school learners skills in developing counterarguments in essay writing. The educator divides the room according to tastes, and...

This activity sounds like a great warm-up or drill for your volleyball players. All the players start on one side of a line, once they bump the ball to another player, they cross the line and wait. The goal is to bump the ball to players...

Create a spider web between two poles and have your class get from one side of the web to the other without touching the web. There are four different suggested levels of play. The rules of each level guide how the players need to get...

Expand the the comparative language of young mathematicians with a hand-on weight measurement activity. Working independently or in pairs, children compare the weight of large wooden blocks to various other classroom objects, recording...