Last week, Monday the 25th of August, a CSIRO representative came to our school to do small experiments to celebrate Science Week for 2008. We were in the science room, first the man talked about CSIRO and what they do, then he explained the things we were going to do. We were in a group of 3, we all had our own bokklets to fill in about the different activities. Here are some that I can remember:

• Taking your heart rate then exercising for a minute and taking it again.
• Cutting into the muscles of a raw chicken wing.
• Standing on a special balancing thing to see how good your balance is.
• Testing different drinks to see which one contains the most sugar.
• Throwing a ball attached to a string as hard as you can into a wall to see how fast you can throw.

It was really fun doing these activities, my group was Jess, Grace and I. My favourite was probably the balancing, I think putting your feet closer together helps more.

Our science teacher Mrs Mc Cartney, put’s up a challenge every week for science or maths. These are on her blog, www.bexta.globalteacher.org.au it’s also in my blogroll.

Anyway, this was this weeks challenge:

How many different squares of all sizes are on a checkerboard?

Organise your listing.

Look for patterns!

There were all different answers, they are on her blog if you would like to see them.

This was my answer:

All= 1
1×1=64
2×2=16
3×3=7
4×4= 4
5×5= 2
6×6= 1
7×7= 1
8×8= 1
Together= 97

Last week in Science we had to get into a group of three, I was with Jessica and Bailey. We then had to blow up a medium sized balloon, and fill one the same size with half water and half air. We then had to light a small candle near the sink. With the first normal air filled balloon we had to lower it near the flame, but not on the flame. We then had to record how they popped, like how fast, what happened to them, and other little things. 

First we did the air filled one, these are the results:

The bottom of the balloon had nothing inside to heat, so it singed the bottom of the balloon to make a hole which popped it. There goes that one! POP! 

Second balloon, half air half water:

We held the balloon over the candle for ages! But it wouldn’t budge, the bottom started turning black but it didn’t singe a hole. The reason for that is that it needed to heat up all of the water in the balloon before it would get hot enough to pop. After ages the water in the balloon started to bubble, which means it was getting hot enough, and then eventually it popped! Water went every where, and over us!