All the year sixes in Book for Breakfast were away this week on their residential, so just four group members gathered. Instead of focusing on reading The Indian in the Cupboard we solved a mystery – and had a great time!
In our meeting room we found a piece of kit that someone had been using – but the question was, what it was for, and how could we find out? By observation and experimentation, Rezija, Dione and Anastazja discovered:
- You can push down the handle on top
- Could it be something for storing paper?
- There was a switch that kept the handle locked if you pushed it to one side while the handle was down
- On one edge there is a bit that looks like an arrow. Do you put the paper in there?
- What if you try it out by putting a piece of paper in it, then pushing down the handle
- It made holes in the paper! It is a hole punch
- But what is the black sliding piece for, with A4 and A3 written on?
- …ah, it’s to make sure the holes are made in the middle of the paper. And you can change the setting for different paper sizes.
Well done everybody! Later we realised that if you look at the underside of the hole punch you can see where all the little circles go when they are punched out of sheets of paper.
This might have given us a clue earlier as to what the machine did.
Inside the hole punch there were two very shiny things that seemed to be important. Mujtaba already knew that the machine punched holes when he saw it, so could he and Anastazja work out what these shiny things were?
They had a good look and experiment, and found:
- the shiny things are what make this happen
They agreed the coiled bits look like the middle of pegs – and then Rezija realised that they are springs. Correct!
Everyone wanted to write a riddle or a poem about their investigation – and some people decorated their paper with holes around the outside! Here they are: