Fraction Earth -- Water & Land
Environmental science, math, and art team up! Find out how much of the Earth is water and how much is land. Make a globe to show what you know!
1. Did you know Earth is a very wet place? Look at maps to see where water is located in your community, country, and on your planet. Look at a globe to find the world’s largest bodies of water. From where does that water come? Identify the continents. What if all continents were pushed together? How much of the planet would be water? What fraction would be land? Estimate, then research to find out what other scientists have calculated.
2. Create a new globe to show what fraction of the planet is water. Smooth Crayola Model Magic® over a crumpled foil ball to create a sphere. Air-dry your Earth overnight. To keep your globe from rolling, balance it on a paper cup.
3. Cover your painting area with newspaper. Use blue Crayola Premier™ Tempera Paint to cover the fraction of Earth that is water. Paint the remaining fraction green or brown to stand for land. Air-dry the paint.
4. Add Crayola Tempera Mixing Mediums to create textured effects on your globe. Paint Pearl It! over blue areas to create the effect of shimmering water. Mix Texture It! into green or brown paint. Dab textured paint onto land areas to make peaks and bumps. Air-dry your globe.
5. You’ll be able to feel how much of our planet is water and how much is land just as easily as you can see it!
Adult supervision is required for any arts & crafts project. Observe children closely and intervene as necessary to prevent potential safety problems and ensure appropriate use of arts and crafts materials. Some craft items, particularly beads and buttons, are potential choking hazards for young children. Avoid use of such small parts with children younger than 3 years. Craft items such as scissors, push pins and chenille sticks may have sharp points or edges. Avoid use of materials with sharp points by children younger than 4 years. Read all manufacturers' safety warnings before using arts and craft supplies.
Crayola Modeling Materials including Crayola Model Magic®, and Model Magic Fusion™, Crayola Air-Dry Clay, and Crayola Dough—
- Keep away from open flames. Do not use to make candleholders, hot plates, trivets, or other similar objects that will be used or placed near fire and other heat sources.
- Do not put in an oven, microwave, or kiln.
- Do not make into vessels/containers that will hold unpackaged food.
- The use of modeling material to make items that look like food is discouraged for children younger than age 5 to avoid their confusion with real food.
- Unless sealed with a water-resistant glaze, do not make projects exposed to or immersed in water, such as boats or outdoor bird feeders. They would disintegrate when exposed to moisture.
- Crayola Dough—contains gluten (wheat flour) as an ingredient.
- Crayola Air-Dry Clay, Crayola Model Magic and Model Magic Fusion are gluten-free. However, they are produced on the same machinery as Crayola Dough which does contain gluten. Although the machines are cleaned prior to the start of each production run, there is a slight possibility that trace amounts of gluten from Crayola Dough may be present in the other modeling compound products. For information regarding specific ingredients or allergic concerns, please call our Consumer Affairs department at 1-800-272-9652 weekdays between 9 AM and 4 PM Eastern Standard Time.
Crayola Washable Paints—Not for use as body/face paint.
- Fraction Earth Toss: Use Fraction Earth globes and inflatable traditional globes to make predictions and collect data about the Earth’s surface. Toss each globe back and forth for 25 tosses. Record what part of the globe is touched by the catcher’s thumb for each toss. Before starting, predict how many touches will be on land and how many on water, and then compare predictions to data.
- Participate in a water sampling project. Invite a scientist to help your class test a local body of fresh or salt water.
- Build a model of the global water system. What a great science fair project!
- Assessment: Invite children to present globes, detailing the information researched and where and how they determined the fractions of water and land on the Earth’s surface. What fraction of the globe is water (three-quarters)? What fraction is land (one-quarter)? Does the globe match the findings?