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In this activity, learners explore the relative size of the Sun and Earth as well as the distance between them.

In this water pollution activity, learners create pond water cultures and investigate the effects of adding chemicals or natural nutrients.

In this creative roleplay activity, learners will explore the various processes of the carbon cycle using movement and props to aid in comprehension.

In this activity (on pages 29-35), learners examine water pollution and filtration.

In this water activity, learners test which objects float and which sink. Learners discover that objects behave differently in water.

In this activity (on pages 16-21), learners get a sense of geological time by understanding how big a million is.

In this water activity, learners explore how water drops behave on different surfaces.

En esta actividad, Mateo y Cientina enseñan a usar modelos para ver las causas de las fases lunares.

In this activity about combustion and energy, learners observe a burning candle in a sealed jar and the burning of white sugar.

This activity gives caregivers and their children an opportunity to practice scientific ways of thinking that are developmentally appropriate for early learners.

In this design challenge, learners design a storm drain cover that catches litter to protect waterways to learn about how local actions can have system-level effects.

In this activity, participants will learn about how gigantic clouds of gas and dust in space, called nebulas, are formed. They'll create their own colorful model nebula using paint and a spinner.

In this activity on page 7 of the PDF (Water in Our World), learners make their own water treatment systems for cleaning water.

In this activity, participants will learn how stars form from the dust and gas that exists in space clumping together.

In this activity on page 7 of the PDF (Plants—The Green Machines), learners examine the effects that light and air have on green plants.

This activity models the way Landsat satellites use a thermal infrared sensor to measure land surface temperatures.

In this design challenge activity, learners make a balloon hover at eye level for five seconds, and then make it move by creating air currents.