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Ancient Sun Observations
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In this activity, learners make their own Sun tracker to explore how ancient civilizations around the world studied the Sun.

Rain Forest in Your Room
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This activity (on pages 19-24) introduces learners to the rain forest's layers—emergent, canopy, understory, and forest floor—and has learners make paper lianas (vines that live attached to trees) and

Design and Build a Wind Vane
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In this activity, learners design and build a simple wind vane —one of the oldest kinds of weather tools— and use it to show wind direction.
Ride on a Slide: Toys or Tubes Ride Slopes and Angles
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This activity is a hit for family events and all ages—some will finish in 45 minutes; others can go on for hours.

Genetics the Easy Way
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In this activity, learners make critters out of recyclables and apply the rules of mathematics to solve genetics problems.

Balloon Bugs
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In this activity, learners make balloon models of disease-causing bacteria.

Sticky Situation
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In this activity, learners separate the protein from milk and and use it to make their own glue.

Excavating and Mapping Under Water
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In this archaeology activity, learners consider ways in which excavating an underwater site is different from excavating a terrestrial site.

Space Stations: Sponge Spool Spine
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In this activity, learners simulate what happens to a human spine in space by making Sponge Spool Spines (alternating sponge pieces and spools threaded on a pipe cleaner).

Construction and Destruction
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In this three/four-day lesson, learners calculate perimeters and areas and draw the castle plan to scale.

The Proof is in the Powder
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In this activity, learners will design a way to identify a powder found at a crime scene by comparing it with known powders, with the goal of solving a crime.

Fruit Xylophone: Fruit Salad Instrument of the Future!
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This is a perfect summertime lunch activity! Pico Cricket is required (micro controller). First, get a bunch of cut up fruit, line them up, then plug a piece of fruit with a Pico Cricket sensor clip.

The Bug Walk
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In this fun group activity involving music and movement, learners are introduced to the idea that many insects walk by using their legs to create "alternating triangles." Learners sing the "Ants Go Ma

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.

Clay Beams and Columns
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In this activity, learners make or use pre-made clay beams to scale and proportion. Specifically, they discover that when you scale up proportionally (i.e.

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

Quipus
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Learners create an Incan counting device called a quipu (pronounced kee-poo).

Size, Scale and Models
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In this activity, learners take measurements and create charts to learn about the size of dinosaurs and their relative scale to humans.

Digging Deeper!
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In this activity, learners explore dinosaur skeletons and anatomy. Learners make observations about a T. rex skeleton diagram and then measure the skeleton length and width.

Make a Cast of a Tyrannosaurus rex Fossil
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In this activity, learners explore dinosaur fossils by making cast models of a T. rex. First, learners read about and research how dinosaur fossils form.