Thursday, March 26, 2009
The blue gear (hidden far left) is turned by the motor. It turns the yellow gear (left most). That yellow gear is on the same axle as the blue gear (1), which turns the yellow gear (1, 2). The yellow gear 1 is on the same axle (2) as the blue gear (2). The blue gear 2 turns another big gear and so on.
What happens is plaque builds up on our teeth and in our mouth over a 48 hour period. Every time we eat sugary foods, the plaque bugs excrete acid. The acid eats out the minerals in our teeth. It takes an hour after eating sugar or drinking a sugary drink, for our saliva to neutralise the acid. Only after that hour does our saliva get a chance to remineralise our teeth.
When we brush our teeth we often miss the same spots. Disclosure tablets help us learn if our technique is working, they help us spot what we miss and practise getting it right. It's a lot easier to unlearn bad habits when you're younger. Looks like I missed a few spots and I only just brushed!
A small head and soft bristles are what you want with a flexible neck. Press the brush right in and just wiggle it. You don't want the tips of the bristles just sliding across the top. You'll also need to move your jaw over for the back teeth. Even with electric brushes, bad technique = missed spots.
A big thankyou to John Jukes for donating his time, a box of toothpastes and disclosure tablets and for giving us a great evening.
Thank you to the Eleven families that came, a total of 20 adults and 29 children, and also to those who let us know the couldn't make it because of the athletics prize giving.
The shared tea before hand was a great success and many new families swapped and shared stories and we got a chance to exchange ideas and information.
Afterwards we introduced the kidsmart computer and briefly shared it possibilities with everyone.
Friday, March 20, 2009
With a lot of teacher input (my brain will never be the same), Ollie making lots of triangles, counting out parts and testing structures we've managed to make one that has the action right after finding rough instructions with pictures online.
Now to make it walk on it's own. We brought a motor, but it didn't have the grunt, so maybe we need to play with some gears. Ollie's gone home with mum to look at her mountain bike and learn about how they work.
Xander loves this now we got it walking on the stand and lots of others are, like me, fascinated by the motion.
Tuesday, March 17, 2009
Back in week five Jo found this beautiful tunnel web spider and her nest while hunting cockroaches.
Then this stag horn beetle (thankyou Andrew Crowe "which New Zealand insect") turned up in the light trap, with it's antler like antennae that fold up and two rhinoceros horns.