Coin drop

 you'll need: coin/s, cup and a peice of paper. put the paper on the cup then put the coin/s on the paper then flick the paper and try and get the coin. we found out that the more coins you put on the peice of paper the it is more easy to get the coins into the cup. the less coins on the paper the harder it is to get the coin in the cup. 

When we did coin drop we had to take turns at flicking the the peice of paper to get the coin in the cup. 

Cold air balloon

goal: get the balloon to pop. Test 1: Cold air balloon is a mixture of vinager and baking soda mixed with water then it makes a chemical reaction that makes the balloon blow up and makes the balloon cold. what you'll need: you'll need baking soda a balloon and waterbottle and vinager. the balloon should blow up and stay like that for a long time. the balloon did not pop.

Test 2: We got a milk bottle this time, and put 1 cup and 1/2 of baking soda in the balloon and put 2 and 1/2 cups of vinager then put the balloon on the milk bottle and lift up the balloon to get the baking soda in the balloon then watch the magic happen. 

Test 3: this time we got a one liter pump bottle, we just poured the vinager in the bottle and put heaps of baking soda in the ballon, you will need to get a stronger balloon then the last two times to make the top of the balloon not to brake when you put it on the bottle, also put a bit of tape where the lid goes on the bottle.

the balloon got really big this time but did not pop.