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In this activity, learners listen to songs and decode hidden messages based on the same principle as a modem. As a final challenge, learners decode the binary messages in a music video.

In this activity, learners compete to be the first to win twenty counting pieces. First, learners draw patterns on only one side of four craft sticks.

Exponga estos pósteres en el salón o déjelos donde los chicos los puedan explorar. Los chicos buscan las respuestas en libros de consulta o en línea.

These math posters have questions written on them, such as: How fast can a cheetah run? or How long can a giant tortoise live? Post these around the room or leave them out for children to explore.

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

In this activity, learners build a paper stellated rhombic dodecahedron, a three-dimensional 12-pointed star.

In this pencil and paper activity, learners work in pairs and simulate how astronomical spacecraft and computers create images of objects in space.

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

In this math-based activity, learners will experiment to find how height and angle affect spatter and then use this knowledge to solve a crime.

In this math lesson, learners are introduced to proportional reasoning through modeling, sharing, and questioning techniques.

Build a house you can fit inside, using cardboard tubes.

Learners make a counting/estimating jar to exchange with friends or bring home.

In this activity related to microbes, learners create scale models of microorganisms and compare relative sizes of common bacteria, viruses, fungi and protozoa using metric measures: meters, centimete

In this math lesson, learners explore probability.

In this health, cooking, and math activity, learners explore nutrition and examine nutrition labels.

In this activity about encryption, learners cut out a secret decoder badge from a handout and use it to encode messages to each other.

This lesson (on pages 46-55 of PDF) features two strategy board games -- one from Ghana and one from China. The first game, Achi, is a cross between checkers and tic-tac-toe.

In this activity, learners build scaled-down structures and cantilevers in a series of "building out" challenges with bamboo skewers and tape.

In this activity, learners rotate through several learning and play stations to explore dinosaurs and paleontologists.

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