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In this math lesson, learners count and compare amounts of money less than or equal to one dollar.

In this activity, learners create a traditional Mexican noisemaker (a matraca) using cardboard, craft sticks, and a wooden dowel.

In this activity, learners build a machine made of craft sticks to multiply the levering motion of their hands and create a device that bends and extends.

In this family or group inquiry activity, learners use their senses to explore a local forest or woodland.

In this engineering design challenge, learners animate a facial expression and make a machine (zoetrope) that plays the animation back.

In this math lesson, learners use the setting of a flower-making fundraiser to explore a variety of patterns. Learners examine the patterns in a flower design made of triangles surrounding a square.

In this activity (posted on March 27, 2011), learners follow the steps to construct a mini zoetrope, a device that produces an illusion of action from a rapid succession of static pictures.

Learners create their own piece of history by decorating, shattering, and piecing together a flowerpot "artifact".

In this math lesson, learners explore tessellations through literature, music, writing, and art activities.

This activity shows you how to make amazing crystal spikes using Epsom salt and the sun.

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

In this math lesson, learners participate in a variety of activities that give them experience in recognizing, describing, and extending repeating and arithmetic patterns.

In this activity, learners build cars using syringes and water-powered hydraulics. Learners construct the car frame out of cardboard and set up a hydraulic system to raise and lower the car.

In this activity, learners explore dinosaurs and fossils by creating a diorama.

In this engineering/design/arts and crafts activity, learners design and build "platforms" or "bridges" that can hold weight, and test which glue makes the strongest structure.

Build your own version of a favorite carnival game, in which a marble races down a maze consisting of rows of nails.

In this activity (page 4 of the pdf), learners build a model of a tide pool, using chicken wire, paper mache, and other craft materials.

In this activity (page 5 of pdf), learners explore the relationships between the shape and structure of a shark's teeth and the food it eats, and then create their own shark tooth from clay.

Learners will follow a specific process to make their own paper using scrap paper, newspaper, or junk mail.

In this activity, learners build a mini crank machine to make a bird "fly." This engineering activity introduces learners to automata, rotational motion, cranks and cams.