Borax is an old-school laundry booster that many of the slime recipes use. But what do you do with the rest of the box when you are done? 

You could get all retro and add it to your next load of laundry, but what fun is that? Today, we are going to share with you three science activities that use Borax - ones that you will want to do over and over again until the whole box is gone!

Trust us, your kids will thank you, even though their socks are a bit dingier.

3 Science activities you can do with Borax

#1 - Borax Slime 

To mix up a batch of Borax slime you will need:

• Glue (Elmer's white or clear gel will work)
• Baggie
• Water
• Borax

If you want to glitz it up a bit, grab some food coloring and glitter. 

First, mix 4oz of glue (half a jar) with 4oz of water (half a cup). If you want to add some glam, now is the time to mix in that food coloring and glitter.

Next, in a separate cup mix a quarter cup of water with half a teaspoon of Borax. Add the Borax solution to the baggie and massage the bag for a few minutes until a nice firm slime has formed.

Now, comes the fun part - add the Borax solution to the glue mixture in the baggie. Start massaging . . . keep massaging the baggie for a few minutes . . . keep going until a nice firm slime has formed.

Pull the slime out of the baggie and have fun!

#2 - Borax Crystal Shapes

Once you have a baggie full of slime, you can use a bit more Borax to make some crystals! You will need the following:

• Glass jar (plastic is fine, too, if that's what you got)
• Pipe cleaner
• String
• Pencil
• Water
• Borax

First, take a moment to bend the pipe cleaner into a shape - snowflakes, hearts, your initials, any of those will do. Just make sure it will fit through the opening of your jar.

Next, attach your creation to the pencil. You can swing the end of the pipe cleaner over it or use a bit of string, but basically, you want the pencil to be able to rest on the edge of your jar without having your shape touch the sides or bottom of the jar.

Now, add hot water until it almost fills the jar, noting how many cups of water it takes to fill the jar. 

Then, add the Borax - one tablespoon at a time - and stir really good before you add another so that the Borax dissolves. Keep going until no more Borax dissolves - this will be about 3 tablespoons of Borax for every cup of water you have added.

Finally, hang your pipe-cleaner-creation in the jar so that it is completely covered by the liquid. Allow the jar to sit undisturbed overnight.

The next morning you will awaken to some crystal growing magic!

#3 - Borax Bouncy Balls

And we save the best for last!! To make these bouncy balls, you will need:

• Glue (Elmer's white or clear gel will work)
• Food coloring
• Cornstarch 
• 2 Small mixing cups (preferably ones you can circular file afterward)
• Plastic spoon
• Water
• Borax

First, in cup #1, mix half a cup of water with 1 teaspoon of Borax - stir to dissolve.

Next, in cup #2, mix a tablespoon of glue and add a bit of food coloring, so you can tell whose ball is whose. (And now you see why I suggested using disposable cups!)

Now comes the fun! Sprinkle a teaspoon of the borax solution from cup #1 over the glue mixture in cup #2 - wait for 2 long breaths (about 10 seconds) - and then add one and a half tablespoons of cornstarch.

Then, mix like crazy until it becomes impossible to stir with your spoon. Take the sticky mess out and start to knead it - I promise it will become smooth and solid after about a minute or so.

And your bouncy ball is ready for testing!