You say that perpendicular bisectors intersect at a point? I concur! Learners investigate points of concurrencies, specifically, circumcenters and incenters, by constructing perpendicular and angle bisectors of various triangles.

The matrix — it's not just a movie. The lesson introduces the concept of 2 x 2 matrix multiplication as a way to represent linear transformations. Class members determine when a linear transformation represented as matrix...

Class members investigate relationships between two variables in the seventh installment of a 16-part module that teaches scholars how to find and describe patterns in scatter plots. Young mathematicians consider linear/nonlinear...

Class members come up with a hypothesis on the number of decimal digits in the product of two decimals. Learners work in groups to complete several decimal multiplication problems. The results help groups develop a conjecture on the...

Boiling down any division problem to a one-digit divisor problem sure makes estimation easy. The lesson shows how to estimate division problems by using place value understanding and basic arithmetic facts to simplify the division. Some...

Equivalent ratios show up on tape. Young mathematicians use tape diagrams to create equivalent ratios in the initial lesson on the topic. They learn the definition of equivalent ratios and use it to build others in the third segment of a...

Look at rates from a general perspective. The 17th part of a 29-part series provides problems that help pupils develop more general ratios from given rates. Scholars determine unit rates and ratios that are associated with given rates....

Which rate is greater and by how much? Pupils continue to compare rates to solve problems in the 20th portion of a 29-part series. Rates are presented in a variety of representations either using the same representation or different...

Find the common denominator between prime factors, factor trees, and the distributive property. Scholars learn to find the least common multiple and greatest common factor of pairs of numbers. They rotate through stations to connect...

Students measure their own foot and place the outline on a graph. They make connections between the size of their foot and the bar graph that represents it.

Students discover the equivalence between knots and math through a manipulative exploration. In pairs, they select three sets of identical knots and change their forms without breaking the knots apart. Students pass them along to the...

Students participate in a variety of activities to understand statistics. They collect and interpret data. Also students distinguish the difference between a population and a sample. They make inferences and create arguments using data.

Second graders view clips from the animated series Math Monsters, and discuss the many ways patterns can be found in the world around us. Following the video portion of the lesson, 2nd graders visit a variety of Web sites to assess their...

Learners practice figuring out how items have been sorted. They also sort buttons in small cooperative groups. They color and sort their own paper buttons and then give their button sort to another student to see if he or she can figure...

In this mathematics terminology instructional activity, students identify and locate various words related to mathematics and measurement. There are eight words to locate in the puzzle.

Seventh graders organize a 20 x 17 room with a given set of furniture pieces. Arrangement is to be based on maximum comfort and practicality. This lesson is a good way to teach and reinforce the mathematical concept of area.

Students answer questions about the fall migration of the monarch butterfly. The data of observations is graphed and displayed using computer technology. This is a good lesson for crossing the curriculum with mathematics.

Seventh graders investigate the mathematical concept of a sector. They apply the concept to an example problem and then move into a more complex application. They find the area of the side of a cone. This is done as students calculate...

Students graph data of sports figure running time using x-axis y-axis to find slope of trend line, mathematically find the interpolated and extrapolated values for data points. Using the information they make predictions.

Students complete a webquest on the mathematication, Archimedes. In groups, they pick a topic of interest and design a hand-on experiment for their classmates. They present their material and model the experiment. They complete a...

In this mathematics worksheet, students identify and solve who has the denser fur, either the Sumatran tiger or the sea otter. They calculate the number of hairs for each per inch or per meters and compare them.

In this consumer mathematics worksheet, students complete one month of budgeting by completing each of the statements with the appropriate information. Then they calculate their total expenses for the month minus their savings account...

In this consumer mathematics learning exercise, students complete a monthly budget by completing each category on the sheet. They fill in the blanks and calculate their totals for month two.

In this consumer mathematics worksheet, students complete a monthly budget form by filling each of the categories. They fill in their total expenses for each category and calculate their budget for month three.