year 3 were set a challenge in Science this week to work out which rock was the hardest and how we could find out the answer.
We decided that Mr Hattam would not want us throwing rocks from great heights to determine which one was the strongest so we had to think again. We decided to see use a range of implemnets on the rocks and see if any of them made a mark on the rocks surface. Those rocks which were easiest to mark we would call the softest rocks and those which we couldn’t scratch would be our hard rocks.
Here are some photographs of us carrying out the test.