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Welcome to Simply Summer School—weekly activities and tips to keep your child learning and engaged over the summer vacation gap! Try out this week’s tips and activities to get your child motivated to keep learning!

Weekly Activities: Rainbow Fun!

This week I am going to share a few activities with you all having to do with colors. My favorite is the “milky rainbow,” which is great for preschoolers through middle schoolers! I’ll also share making colorful carnations, painting with colorful ice cubes, watching colors in the veins of celery and mixing colors in shaving cream. You’ll have enough fun for a whole week with this post! My favorite rainbow book ever is A Rainbow of My Own.

Milky Rainbow


  • Milk
  • A bowl or saucer
  • Toothpicks
  • Food coloring
  • Dish soap

Pour milk into a bowl. I usually let my children pick three colors of food coloring and add a couple drops of each into the milk. Touch the end of the toothpick to the dish soap, then touch it to the milk–just breaking the tension, not swirling. Watch what happens! After watching the colors from the initial breaking of the tension, it is fun to swirl and mix around the colors in the milk. Your children will want to do this activity again and again. I have done this activity with dozens of children and every single one of them have wanted to do it multiple times! This is a must do activity!

Painting with ice cubes


  • Ice cube tray
  • Food coloring
  • Paper

Put water in the ice cube tray and add some food coloring to each cube. Freeze them. Then use the colorful ice cubes to paint with. This is a great hot day activity!

Celery Veins


  • Celery
  • Food coloring (blue or red work best)
  • Water

Your children will love watching color going up the veins of the celery with this experiment! It is perfect to do before doing the colorful carnations because it will give your children a deeper understanding of how the color is going up the plants. Fill a cup with blue or red food colored water and place a celery stock in it (complete with leaves at the top). Every day, check the celery and watch as you can see the color going up the veins of the plant. So neat!

Colorful carnations


  • White carnations
  • Water
  • Food coloring
  • Knife

This activity is so easy! Simply place water of various colors in vases and place white carnations in them. Watch the carnation pedals change color and talk about how it’s happening! For some extra fun, use a knife to split the stem of the carnation and put it into two different colors of water.

Shaving cream colors


  • Zip lock bags
  • Shaving cream
  • Food coloring

This activity can be enjoyed by children of all ages—even young toddlers! I wrote about it as a rainy day activity briefly as well. This is a great way to learn about using primary colors to make secondary colors. Put some shaving cream in three bags. In the bags add: yellow and blue food coloring; red and yellow food coloring; red and blue food coloring. Let your child mix and see what new colors they make! This is a great calming activity. Sometimes I tape the bags to a window (as you can see in the Fun Being Stuck Indoors article). Other times, you can let children simply squish the bag around in their hands or tape them to a table top.

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