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Shapes and Angles
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In this activity (page 7 of PDF), learners will identify the general two-dimensional geometric shape of the uppermost cross section of an impact crater.

Geometry and Spatial Relations: Tessellations WOW!
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In this math lesson, learners explore tessellations through literature, music, writing, and art activities.

Geometry and Spatial Relations: It's a Perfect Fit
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In this three-part math activity, learners explore shapes. In part one, learners identify, describe, and classify two-dimensional shapes.

Measurement: Sand Babies
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In this math lesson, learners explore and investigate measurement using standard and non-standard units.

Home Water Audit
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This activity offers learners and their families several ways to raise their awareness together about home water.

Quadratic Functions: Toothpicks and Transformations
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In this math lesson, learners explore transformations and quadratic functions through toothpick patterns.

Tree-mendous Plots
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In this math lesson, learners record and graph plant growth and interpret data. Learners plant seeds, and once the seeds sprout, record the change in height of the plants for several days.

Statistics: Creature Features
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In this math activity, learners collect, organize, and analyze a set of data related to types of animals in the temperate forest.

Angles and Area
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In this activity (page 10 of PDF), learners approximate the area of the uppermost cross section of an impact crater using a variety of square grids.

Geometry and Spatial Relations: Sidewalk Capers
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In this math lesson, learners use a variety of manipulatives to explore spatial relationships of squares and their transformations.

Statistics: Wet Heads
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In this math lesson, learners learn how to construct stem and leaf plots. Learners first estimate the number of drops of water that will fit on the head of a penny.

Bean Bugs
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In this outdoor biology and math activity, learners estimate the size of a population of organisms too numerous to count.

Number Sense and Computation: Soak It Up
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In this math lesson, learners compare products to determine the best product.

Number Sense and Computation: An Apple a Day
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In this math lesson, learners make estimates to analyze the number of apples per acre, and visualize the magnitude of one million.

Mountain Man Measurement Rendezvous
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In this math lesson, learners participate in several activities where they apply measurement skills.

Slide Rules
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Learners make their own simple slide rules out of paper and learn how they work.
Paper Bag Skits: Using Size and Measurement
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Put the math of measurement, numbers, and everyday life into improvisational skits.

Computation and Estimation: Roll Out The Barrel
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In this math lesson, learners apply mathematical modeling to solve a real-world storage problem, in which a manufacturing company is given two options for storing oil barrels.

Size, Mass, Area, and Volume
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In this activity (page 23 of PDF), learners conduct an experiment to determine how the size and mass of a projectile affects the area and the volume of an impact crater.

Probability: Rock Around The Clock
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In this math lesson, learners apply the Monte Carlo method of simulation to determine a reasonable estimate.