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Pedal Power
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In this engineering activity, learners examine bicycle mechanics and gear ratios. Learners determine which gears will help them bike a set course in the shortest amount of time.

Calendarios para cualquier año
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Este Web site contiene links a 12 calendarios (12 meses). Cada mes contiene actividades sobre matemáticas.

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

Build a Lever
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Learners build a lever and use it to lift a load. With the load on one end of the ruler, learners add coins to the effort cup at the other end until the load is lifted.

Root Beer Float
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In this quick activity/demonstration about density, learners examine what happens when two cans of root beer--one diet and one regular--are placed in a large container of water.

How can Clouds Help Keep the Air Warmer?
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In this activity, learners explore how air warms when it condenses water vapor or makes clouds.

Gravity Fountains
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This activity (located on page 3 of the PDF under GPS: Glaciers Activity) is a full inquiry investigation into the forces of gravity and air pressure.
Giant Museum: Create a Scale Model
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In this activity, learners will predict the size of a giant scale model of a comb or other rectangular object, then make one. If you tripled the size of a dollar bill, could you sit on it?

Discovering Rainforest Locations
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In this activity, learners will examine various world data maps to combine the information and predict which areas could be tropical rainforests.

Magnetic Free Fall
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In this activity, learners use a pencil, magnets, and mat board to illustrate Newton's Second Law.

Disappearing Act
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Make a camouflage cut-out animal! Using patterned paper or magazine pictures from around the house, use your craft skills to make a paper animal that blends into its background.

Resonant Rings
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Things that are different sizes and stiffness vibrate differently, and in this Exploratorium Science Snack, you'll see how rings of various diameters react to vibration and external forces.

Shrinking Cups
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This is a quick activity (on page 2 of the PDF under Gecko Feet Activity) about the forces of gravity and surface tension and how their behavior is influenced by size.

Arrows
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In this activity, learners surprise their eyes with an optical illusion involving arrows made out of pipe cleaners.

Drop IT!: Depth Perception
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These two activities (4th on the page) demonstrate the importance of two eyes in judging depth.

Filtering
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Make a quick and easy filter from household materials. A filter will catch any solids suspended in a liquid and filter them out. By using a filter, learners can discover amazing things.

Drinking Straw Pulse Measurer
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In this health activity, learners create a device so that they not only feel their heartbeat, but also see it, using a straw and some clay.

Model Eardrum
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In this activity (last activity on the page), learners make a model of the eardrum (also called the "tympanic membrane") and see how sound travels through the air.

Melts in Your Bag, Not in Your Hand
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In this activity, learners use chocolate to explore how the Sun transfers heat to the Earth through radiation.

Apartment Buildings and More
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In this engineering activity, young learners investigate multi-level buildings.