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In this math lesson, learners follow step-by-step directions for making tangram pieces out of folded and torn paper. First, learners read "Grandfather Tang's Story" by Ann Tompert.

In this activity (page 2 of PDF under GPS: Alligator Habitat Activity), learners will study the adaptations different fish species have developed to survive in their habitats.

Learners will build and experiment with their own windmills made from simple household materials.

In this activity, learners construct three optical illusion toys to examine how our brains play tricks on what we see.

In this physics activity, learners build a toy with a figure that spins around like a gymnast on the high bar.

In this activity, learners create 3D geometric shapes using straws and pipe cleaners.

In this activity, learners create a cool floating animal using the science of magnetism. Learners discover what happens when a piece of magnetic metal enters a magnet's field.

This activity generates learner excitement about light through the creation of a room-sized rainbow.

In this activity, learners create their own bird species using arts and crafts materials. The bird call recordings are not online so the introduction activity can't be done, but everything else can.

In this activity, learners compare the ways of life of Plains Native Americans who hunted and moved frequently to follow the buffalo herds, and Native Americans who farmed and lived in more permanent

In this activity, learners draw natural objects to explore the details, differences, and similarities of natural objects.

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

In this indoor and outdoor activity, learners discover that insects grow and develop as do all living things, going through a process known as complete metamorphosis.

In this bilingual (English/Spanish) activity, learners create family trees by tracing the hands of their family members.

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

In this activity with several mini experiments, learners explore the chemistry that helps scientists learn about the environment and how they can help save it.

In this archaeology meets art activity, learners make a mosaic and consider the ways in which art communicates.

In this activity, learners use a nail and magnet wire to build an electromagnet, which controls the movements of a paper dancer.

This fun and simple hands-on astronomy activity lets learners make 3-dimensional models of the Earth and Moon.

In this activity (page 95 of the PDF), learners create Escher Staircase models similar to those that were used by Neurolab's Spatial Orientation Team to investigate the processing of information about