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In this activity, learners mix several sugar solutions to investigate the property of density. Each sugar solution has a different density and color of the rainbow.

In this activity, learners build a bird that flies in place with help from a motor, wire, and some straws.

In this activity, learners build and test a compass. Learners work in pairs and pretend they are stuck in the wilderness at night.

In an investigation called "Shape It!" learners craft tiny boats out of clay, set them afloat on water and then add weight loads to them, in order to explore: how objects stay afloat in water; what th

In this activity, learners are challenged to design a planktonic organism that will neither float like a cork nor sink like a stone.

In this tabletop board game, players will represent a team of scientists and engineers sending a spacecraft on a mission to space.

In this math activity, each learner creates a book about themselves using a template. Learners discuss the different parts of the body and practice measuring their body parts using crayons.

In this activity, learners analyze a fictionalized report of life on Mars, based on a real NASA satellite photo, and explore how to separate scientific fact from fiction.

During this lesson, learners will determine their blood pressure and learn about systolic and diastolic pressures.

Directed by instructional cards, learners kinesthetically model cell communication by acting as components in a cell signaling pathway.

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

In the related activity called "Colors Collide or Combine," learners are intrigued by the apparent "line" that forms where colors from M&M coatings meet but do not mix.

In this activity, learners observe how salinity affects the freezing point of water by making and enjoying ice cream.

In this activity, learners make a photographic image--without a camera!

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

In this genetics meets math activity, learners take inventories of their own easily-observable genetic traits and compare those inventories with other learners in groups.

Using a milk-based recipe, learners create "moo glue" which is basically white school-type glue. The "secret ingredient" in milk that helps make glue is a chemical called casein.

You just ate a big meal and feel heartburn coming on. You take an antacid and feel better. Why? Heartburn is caused by stomach juice (an acid) burning the esophagus.

In this weather forecasting activity, learners use common materials to construct a rain gauge and measure daily, monthly, and yearly rainfall.

How can you make one shade of gray look like two? By putting it against two different color backgrounds! This activity allows learners to perform this sleight of hand very easily.