101 Number Activities

56
COLOR MIXING
Materials
Index cards
Markers
Clear-plastic cups
Water
Small bowls
Food coloring
Eyedroppers
Activity
Make ten color-mixing cards by drawing combinations of different colored dots on index cards. For
example, you could draw combinations of three blue dots and two red dots; two yellow dots and one blue
dot; and one blue dot, two red dots, and one yellow dot. Fill ten clear-plastic cups halfway with water. Set
out small bowls of diluted red, blue, and yellow food coloring, with an eyedropper in each bowl. Place the
index cards beside the cups of water. Invite one of the children to choose a cup and a color-mixing card.
Have the child name the colors and count the number of dots on the card. Let the child use the
eyedroppers to place the corresponding number of drops of food coloring into the cup of water. If desired,
have the child predict what color the water will become before adding the food coloring.
Extension: Set out clear-plastic cups filled with water and blank index cards. Let the children make
and follow their own color-mixing cards.
© School Specialty Publishing

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© McGraw-Hill Children’s Publishing
1-57029-488-7 101 Number Activities
50
57
COLORED CRYSTAL JARS
Science
Materials
Epsom salts
Bowl of water
Measuring spoons
Baby food jars
Red, blue, and green food coloring
Activity
Let the children practice measuring and counting as they set up this colorful crystal experiment. Set out
the materials. Help each child measure 3 teaspoons Epsom salts, 3 teaspoons water, and 
1
⁄
4
teaspoon food
coloring into a baby food jar. Over the next few days, have the children observe what happens as the
water in their jars evaporates and small crystals begin to form. Keep a magnifying glass on hand for closer
examination.