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In this activity about human interface design issues, learners help the Oompa-Loompas of a great chocolate factory solve different problems.

In this math lesson, learners make estimates to analyze the number of apples per acre, and visualize the magnitude of one million.

In this math lesson, learners participate in a variety of activities that give them experience in recognizing, describing, and extending repeating and arithmetic patterns.

In this activity (page 12), learners apply the concepts of pixilation and pointillism to the world of biomedical science.

In this math lesson, learners use slices of bread and geoboards to explore several ways to divide a rectangle in half. Learners also identify equivalent fractions that represent one-half.

In this math lesson, learners count and compare amounts of money less than or equal to one dollar.