Explore linear and square dimensions by comparing areas of similar figures. A creative set of five activities designed for elementary through high school classes asks young scholars to compare areas of specific polygons. The first two...

Develop an understanding of algebraic sequences through an exploration of patterns. Five leveled problems target grade levels from elementary through high school. Each problem asks young mathematicians to recognize a geometric pattern....

Investigate polygons from rectangles to triangles to octagons. Each level of the five-problem series targets a different grade level. Beginning with the level A problem, learners examine the relationship between area and perimeter by...

Don't use use a fraction of the resource — use it all! Scholars attempt a set of five problem-of-the-month challenges on fractions. Levels A and B focus on creating fractions and equivalent fractions, while Levels C, D, and E touch on...

Now you'll never have trouble cutting a cake evenly again. Here is a set of five problems all about partitioning shapes into a given number of pieces and identifying the fractional amount of each piece. As learners progress through the...

Students utilize prior knowledge to erect and assemble a building from a drawing using spaghetti noodles and marshmallows. For this building lesson, students visualize a three dimensional structure from looking at a picture and...

Students make an earthquake simulator and test their structure to see if it lasts through the earthquake. In this earthquake lesson plan, students make a structure and test and record the results from an earthquake simulator made out of...

Students use the internet to research Archimedes' principle of buoyancy. In groups, they summarize the principle and share it with the class. They also participate in experiments in which they test the principle and share their results...

Students use NASA satellite data to see cloud cover over Africa.  In this seasons lesson students access data and import it into Excel. 

Students calculate the radius of the earth. They use the method and data suggested by Eratosthenes. They investigate the interrelationships among mass, distance, force, and time through experimental processes.

Students discover logical deduction by participating in a play.  In this reasoning lesson, students act as characters from a play who's words must be analyzed to see if they are true or not.  Students perform parts of the play...

Students discover the formulas for calculating distance. In groups, they solve equations determine the distance in a specific amount of time. They record their answers in a chart or graph and compare them with their classmates.

Students listen to the book Five Little Monkeys Sitting In a Tree, identify written numbers 0-9 and the symbol for subtraction; students subtract two single digit numbers using manipulatives, and recite the corresponding number sentence.

Ninth graders divide in pairs 3 cards with the words possible, impossible and certain on them. Ask questions of the class and get the students to hold up the word that describes the event (for example) Tomorrow it will snow. You have...

Fifth graders explore the use of trigonometry to find unknown sides and angles in right-angled triangles, taking the concepts that were developed in the previous unit and looking at different ways of practicing the new skills. Students...

Students explore geometric shapes using pattern blocks. They use specific shapes to fill in triangles, color-in their solutions, and discuss the results with a partner.

Students explore the concept of budgeting. In this budgeting lesson, students pretend to have $120 to spend on camping gear for a camping trip. Students decide which items are absolutely necessary. Students calculate the total amount...

Algebra learners must know how to use rational numbers to approximate irrationals. This resource asks participants to decide which number is larger without using a calculator. It makes a great exercise to use as a five-minute transition...

Junior geometers discover that polygons can be decomposed into triangles and that the number of triangles can be determined by a rule. Note that the Geometer’s Sketchpad® software is required to carry out all components of this...

Students establish classifications of shapes by various properties (angles, sides, etc.). They introduce the important properties of common shapes. Students develop an awareness of the wide variety of ways the 2-D shapes can be alike.

Students critically follow a chain of reasoning to devise a decent problem solving technique to be applied to a reasonable problem. They also examine how to use logical arguments.

Students use Venn diagrams in order to classify different objects and numbers. They then use "Venn Diagram Shape sorter" applets on the computer.

Fifth graders classify blocks according to their attributes. In this math lesson, 5th graders will identify attributes of blocks, sort them, then form the groups into a Venn Diagram, and write ratios using the attributes.

Middle schoolers work together to develop logical arguments about pyramids and chain letters. They share their ideas with other groups and create a diagram showing the breakdown. They discuss the results.