5 Cool Science Activities to Keep Kids Learning During the Holidays

In the past, summer learning was sometimes treated as an optional, not-so-important part of education. After all, summer was all about taking a break from school. Not this year! With the COVID-19 outbreak, parents have been getting involved in home schooling this summer whether they like it or not, and we know that sometimes it can be hard to continually come up with new educational activities! 

Never fear, we’ve got a few good ideas of our own—after all, Twig Science Tools is packed full of them—and we’d like to share five of our favorites. We know all about how important it is to fight the summer learning gap, but at the same time, summer is all about fun, so we’ve selected activities that kids will really enjoy. They may not even realize they’re learning science at the same time—but they will be! So whether you’re a teacher looking for inspiration for summer school, or a parent looking to keep their kids busy over summer, the following activities are a great addition to your toolbox!

1. Grow Your Own Geode

Geodes are natural rock formations that have cavities lined with crystals or other minerals. They’re typically formed in igneous rocks by cooling lava or magma—but you can encourage your children to grow their own geodes, helping them to learn how different minerals create crystals of different sizes and shapes based on saturation levels and cooling rates.

What you need:

  • Alum powder
  • Epsom salts
  • Borax
  • PVA glue
  • Empty, clean eggshell halves
  • Food coloring
  • Three cups
  • An empty egg carton

Procedure: Coat each eggshell half with glue. Sprinkle a couple of shells with Epsom salts, a couple with borax and a couple with alum powder. Let these dry overnight in the empty egg carton. In the morning, fill the three cups with boiling water and add several drops of food coloring to each. Pour alum powder into the first cup into it stops dissolving; add borax to the second cup in the same way; and saturate the third with Epsom salts. It’s essential that in all three cases the mixtures are saturated—i.e., as much as can be dissolved in the liquid is dissolved. Pour each mixture into its corresponding geode: the alum mixture should be poured into the eggshell coated with alum, the borax mixture into the shell coated with Borax, and the Epsom salts mixture into the shell coated with the Epsom salts. Leave the shells to cool. Observe them after an interval of four hours and another of 10 hours, and then look again the following morning. What happens to the geodes? Do the crystals get bigger if they are left to cool longer? Which mixture creates the most beautiful crystals? See? Fun and scientific learning rolled into one. You now also have a number of beautiful paperweights!

2. Windmill Garden Ornaments

These beauties help kids learn how to measure the velocity and direction of the wind, as well as providing you with beautiful decorations for your garden. Why could it be important to measure the wind? Well, this natural resource is a major source of energy, and countries all over the world use wind turbines or windmills to harness this energy. Pinwheels use the same principle as windmills or wind turbines, providing an excellent way to study how wind energy can be captured so that it can then be converted to electric energy.

 What you need (per windmill):

  • Square of colored paper, 8 x 8 inches (20 × 20 cm)
  • Scissors
  • Pushpin
  • Length of thin dowelling

Procedure: Fold the square of paper in half diagonally, then open out before folding diagonally again perpendicular to the first fold. Open out flat. Use the scissors to cut along the folds, stopping each cut around 3 cm from the centre. Pull down alternating corners to the centre of the square, taking care not to fold or crease them. Hold each of the corners gently in place until you’ve pulled down all of them, then secure with the pushpin. Push the pushpin into the top of the dowelling, but leave just enough space to allow the windmill to turn.

Choose a windy day to take the windmills out. Ask your child to look at the front of the pinwheel. How fast does it go? What way do they need to hold the pinwheel in order for it to spin the fastest?

3. Color Your Flowers

This is a fun little activity to get young children interested in botany by showing them how water is transported in plants.

What you need:

  • Several white flowers (chrysanthemums or carnations work best)
  • Several different colors of food colouring.
  • Lukewarm water
  • Small vases

Procedure: Begin by cutting about a quarter from the bottom of a stem of each flower, making sure to cut at an angle. Line up the vases and fill each about halfway with lukewarm water. Ask the children to pour around four or five drops of food coloring in each vase. Alternately, you could vary the amount of one color that you put in each vase: one drop of dye in the first vase, four in the second, eight in the third, and so on. Now place a single flower in each vase and leave them for a day. Over time, you’ll see the flowers take on the colour of the water. How did that happen? Which colour is the darkest and which is the lightest? Why is one flower a pink colour while the other a deep red when they all have red food colouring? You can also remove a flower to cut the stem halfway, showing your children how the inside of the stem is the same colour as the water. You can have a lot of fun with this experiment using different flowers—you could even split the bottom of the stem of a flower vertically into two and put each half in a vase with a different color!

4. Edible Stained Glass

Food science at its best! Adding food coloring to this experiment gives it that artistic touch that kids love. It does require constant adult supervision, but the results are stunning and delicious. You can find the full experiment here.

What you will need:

  • Saucepan
  • 13/4 cups (350 g) granulated sugar
  • 1/2 cup (120 ml) light corn syrup
  • Pinch cream of tartar
  • 1 cup (240 ml) water
  • Food coloring (preferably in at least three different colours)
  • Cooking thermometer
  • Baking sheet or disposable baking tray
  • Nonstick cooking spray

Procedure: In the saucepan, combine the sugar, corn syrup, and cream of tartar with the water and place over a very low heat. Stir constantly until the mixture is dissolved and becomes transparent. Check the temperature using the thermometer and let the mixture slowly come to the boil: for this mixture, about 300–310℉ (149–154℃). In the meantime, spray the baking tray with the nonstick cooking spray. When the sugar mixture comes to the boil, remove from the heat and pour the mixture very carefully into the baking tray, watching out for splatters. Allow the kids—still under supervision!—to sprinkle drops of food coloring over the mixture before spreading them in swirling patterns using a wooden spoon or butter knife. Leave the mixture to cool for a few hours. Once cool, remove the stunning glasslike sugar pane.

5. Grow a Plant Without a Seed

Farmers and gardeners use botanical science all the time when it comes to growing fruit and vegetables. Asexual reproduction of plants is an important part of the curriculum, so why not give the kids a head start for next year while cultivating some homegrown herbs at the same time?

What you need:

  • Old jelly jars (cleaned thoroughly)
  • Shop-bought basil, mint, and coriander
  • Room-temperature water

Procedure: Select a couple of healthy stalks and trim their ends. Let the children gently remove the lower leaves, but make sure to keep the top leaves intact. Half-fill each glass jar with the room-temperature water. Place the stalks in the water so that the nodes left from where you pulled the lower leaves off are submerged, but make sure the top leaves remain above the water line. Place jars in a well-lit area (although out of direct sunlight). In two weeks’ time the stalks should sprout roots and be ready to be potted up. Ask the kids if they thought that this would be possible.

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For lots more inspiring activities—plus high-quality science videos and lessons—check out Twig Science Tools