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In this math lesson, learners apply the concepts of ratio and proportion to determine the length of the Statue of Liberty's torch-bearing arm.

In this math lesson, learners explore the concept of using units to measure length. Learners first read "How Big is a Foot" by Rolf Myller and learn about units.

In this activity, learners build a 1:140 "scale model" of NASA's X-33 Reusable Launch Vehicle (RLV) Technology Demonstrator, and investigate how the model dimensions compare to the real vehicle.

This is an activity about prediction. How far can you hop in 5 seconds? Could you make it to the door? Across the room? Everyone lines up and tries it.

Create a “Find Someone” list, with about 10 items, each containing a shape, number, or measurement. Can you find someone in the group with hair about 4 inches long? Someone wearing parallel lines?

In this activity, learners use measurement concepts to make models of what their body parts might look like if they were a snake or a chameleon.

In this math lesson, learners rotate through various centers while comparing and ordering objects according to length.

In this activity, learners will predict the size of a giant scale model of a comb or other rectangular object, then make one. If you tripled the size of a dollar bill, could you sit on it?

In this graphing exercise (page 2 of the pdf), learners compare their own height to the length of various sharks.

In this activity, learners will decide together on a question about how far, long or high the group could reach together.

In this activity, learners make pretend snakes and use them to explore estimation and measurement. Learners roll out clay snakes and estimate and measure their lengths and diameters.

In this math activity, challenge learners to make two equal rows from eight different paper strips. Learners can explore the many ways they can solve this problem.

In this math lesson, learners use inchworm measuring tools to measure the lengths of several objects in the room.

In this self-measuring activity, learners measure and record the length of their foot.

In this full inquiry activity (located on page 3 of the PDF under GPS: Kinetic Sculpture Challenge Activity), groups of learners will make predictions about which feature of a pendulum (mass, length,

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

In this math lesson, learners explore the concept of using units to measure length.

In this activity, young learners use different-sized paper 'caterpillars' and various household items to predict and measure their height.

In this activity on page 1 of the PDF, learners compare the relative sizes of biological objects (like DNA and bacteria) that can't be seen by the naked eye.

An ordinary camera has a lens that makes an image on film. In a pinhole camera, a small hole replaces the lens.