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In this activity, learners make mobiles to explore the concepts of balance, counterbalance, weight, and counterweight.

Experiment with friction and make bearings for a whirligig! This activity is a nice introduction to friction and bearings and demonstrates why bearings are useful for spinning.

Use the Zoo Calendar (page 1 of PDF) to involve learners in interdisciplinary, whole language, and writing activities about ecological concepts.

In this activity on page 5 of the PDF (Plants—The Green Machines), learners use chromatography to separate and identify pigments within various leaves.

Make a kite out of a garbage bag, shower curtain, painting tarp--anything light, thin, flexible and plastic!

The goal of this activity is to design, build and test a house or toy for an animal.

In this activity, learners use simple materials and basic tools to construct a special toy to explore pendulums. As the head of the toy bobs one way, the eyeballs bob the other way.

In this activity, learners are challenged to design and construct a trophy for prize-winning sports equipment.

In this activity, learners discover that some things only stand up while they are spinning.

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

In this activity (page 4), learners work in groups to plan and build large structures using recyclable materials they have brought from home.

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.

In this activity, learners explore how engineers have improved roofing designs and materials in order to protect the contents of buildings.