Learning About Science Through Cooking (Delicious Recipes)!
Cooking is all about chemistry. How ingredients react together or alone when heated, cooled, mixed, blended and more. What better way to get your kids excited about science, and food, than by experimenting, then eating your experiments together? Here are two quick and easy recipes to keep your kids busy this summer, made from simple enough ingredients you probably have at home or can find at your local supermarket.
Ice-Cream in a Bag
Forget your conventional popsicle and waiting all day for it to freeze… checking on it every ten minutes. Your kids can learn all about liquid-to-solid transformations this summer in a much more exciting, quicker and yummy way!
All you need is (makes 1 serving, you can double that but not more):
- ½ cup milk (or mix equal parts milk and cream and use ½ a cup of that)
- 1 ½ teaspoon sugar
- ½ teaspoon vanilla extract
- ½ cup rock salt
- Lots of ice.
- 2 sandwich-sized sealable bags, and 2 gallon-sized bags (1 gallon is almost 4 liters)
How to do it:
- Pour the milk, sugar & vanilla in one of the sandwich-sized sealable bags, push all the air out and seal it, then place it into the second sandwich-sized sealable bag and seal it.
- Place your double-bag inside 1 gallon-sized bag, add your ice, lots of it, and your salt. Then place all 3 bags inside the second gallon-sized bag.
- Get your child to put on gloves or oven mitts as the bag gets cold, and take turns as a family shaking the bag for about 15 to 20 minutes.
- Open after 20 minutes and see what you have! Frozen soft ice-cream!
How it works:
Salt makes the ice melts faster, and as it melts it absorbs the heat coming off the milk mixture, which lowers the temperature of the mixture, causing it to turn solid and freeze!
Slime is all the rage with kids these days, the hours just fly by when kids are engaged in this multi-sensory activity. But imagine the slime is also edible? Meaning it is safe and chemical-free, and if kids lick their fingers, its ok!
Here’s what you’ll need:
- For the gelatin: ½ cup boiling water + 3 packs gelatin
- 3 tablespoons corn flour or 2 tablespoons cornstarch
- Food coloring (optional)
- 2 tablespoons icing sugar
- An extra 2 to 3 tablespoons icing sugar for your hands
How to do it:
- Mix ½ cup boiling water with 3 packs of gelatin, mix with a fork and leave it to cool a bit.
- Add a couple of drops of food coloring (optional).
- Once it cools, knead in the corn flour and icing sugar.
- Now it’s time to have some slimy fun! It can get a bit sticky though so make sure you get some extra icing sugar on your hands so the slime doesn’t stick to your fingers.
How it works:
The gelatin has a protein in it, this protein forms a spiral “polymer”, the thing that makes the slime stretchy. When heated, the polymer becomes extra stretchy, the corn flour keeps it that way by creating a sort of a slime dough!