[Free Registration/Login may be required to access all resource tools.] Find the product of two decimals using area models.

In the NGSS, one of the performance expectations is for the children to develop a model to represent the shapes and kinds of land and bodies of water in an area. In the science practices, the children also must develop and use models....

Demonstrates how to calculate the area of two-dimensional shapes using formulas. Covers parallelogram, triangle, trapezoid, and circle. Includes a video modeling how to find the area of a circle and a triangle. [0:59]

Using Melanie Watt's book entitled Scaredy Squirrel at Night, this multi-day lesson allows students to apply information about Scaredy Squirrel's night time experiences and its fears as their final product model. Students will create...

In this activity, students investigate how different riparian ground covers, such as grass and pavement, affect river flooding. They learn about permeable and impermeable materials through the measurement how much water is absorbed by...

What fraction of the section of land does each person own? Students use an area model of farmland to determine how much land each person owns.

[Free Registration/Login Required] This is a formative assessment task where students are asked to first make a mathematical model of a mudslide given the dimensions of the area it covers. They then use an estimate of density to...

This is the second version of a task asking students to find the areas of triangles that have the same base and height. This presentation is more abstract as students are not using physical models. They still determine the area of each...

The probability resource investigates compound events. Students learn about the topic through notes and examples. The tutorial consists of practice exercises to check for comprehension of the concept.

For this lesson, the mentor text called Mathematickles by Betsy Franco is used. Students will use the language of mathematics to demonstrate their understanding of the topics about which they write. Older students should use humor and...

Students learn about wind energy by making a pinwheel to model a wind turbine. Just like engineers, they decide where and how their turbine works best by testing it in different areas of the playground.

[Free Registration/Login Required] This is a formative assessment task where students are asked to estimate the population of Utah based on information given about its population density and the perimeter of its state boundaries. Samples...