Students are presented with the following problem: A cracker manufacturer has been losing money and has to find a way to save her factory. They are given the task to design a new shape for the cracker manufacturer so that as little...

In this fish in the Hudson worksheet, students read a brief excerpt about what types of fish can be found in the Hudson River in New York. They identify which fish are caught in greatest numbers and those caught in the most places....

Students discover the relationship between the sides of a polygon and the number of diagonals that can be drawn from one vertex, the number of triangles that those diagonals form, and the sum of the interior angles of that polygon.

Students predict the number of cells after a series of cell divisions.  In this cells lesson students create a graph of their results and create a patterned drawing. 

Students discuss the appropriateness of using a specific tool to measure and define an object. After measuring the area of their classroom and the objects in it with the appropriate tools, they create a floor plan that makes the most...

Students discuss accuracy and the need for it in blueprints in order to create the final project. They further refine and perfect drawings as part of the school drawing project. Students create a blueprint for the new school building...

[Free Registration/Login may be required to access all resource tools.] Students watch a video to determine if a two dimensional shape can be tessellated and then take a quick assessment to test their skills.

This one page Mathworld site has a number of examples of semiregular tessellations. A definition and a small amount of related information is given at the bottom of the page.

Interactive tool creates patterns to cover the screen using regular polygons.

Need a pentagonal pyramid that's six inches tall? Or a number line that goes from -18 to 32 by 5's? You can create all those things and more.

Students who have a clear understanding of the previous lessons can work on gallery problems of their choosing. This can be used as a good review or assessment.

This MathWorld site shows pictures of polyhedra which can fill space. A discussion of these figures follows.