Monthly Archives: June 2014

Interschool Cross Country

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Interschool Cross Country

Yesterday we competed in the Interschool Cross Country against schools in our area. Everyone competed with enthusiasm and strove to do their best. All participants are to be congratulated for their effort.

Overall we came second overall, falling six points short of Jandakot.

Well done to Chelsea for coming second in her race. Congratulations also to Shannon for winning his race.

Puzzle Problem Solving #2

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Puzzle Problem Solving #2

This is our second problem solving task. You will have until Monday to comment with an answer below. You must also DRAW this shape into your homework book, and show the different triangles.

The shape below is a pentagon with each its vertex connected with every other.
The question is how many different triangles are hidden in this figure?

CountingTriangles

Volcanoes

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Volcanoes

During the week we completed an experiment to make volcanoes out of vinegar, bicarbonate of soda, washing up liquid and food dye.

It was great fun as we investigated the best combination of active ingredients. After beginning with 30mL of vinegar and 2 teaspoons of bicarbonate of soda, we then tried increasing the vinegar and then increasing the bicarbonate of soda to discover which one increased the ‘explosion’.

Please comment below and let me know which caused the biggest explosion- increasing the bicarbonate of soda or increasing the amount of vinegar.

Puzzle Problem Solving

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Puzzle Problem Solving

I found this puzzle on a website called puzzles.com

Since we are looking at problem solving, I am going to give you a week to try to solve this one, and leave a comment below (I would like everyone to do this as a part of your homework).

How many E’s, exactly the same as the small one on the top, of any possible size and orientation, can you find in the pattern?

The answer might surprise you. Remember that the E’s can be any size, and may be upside down or back to front.The ‘middle’ of the E must be shorter than the top and bottom.

It may help to print off the picture, but you must comment below.

Important Websites

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Important Websites

Sick of scrolling all the way down to get to the website for Lexile? Worry no more! You can now click on the link near the top of the page that says ‘Important Websites’. This will take you to a page with helpful websites to help you with your learning.

Looking at Pi

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Looking at Pi

Our mental maths book has recently mentioned this funny word called ‘Pi’, and with our focus being measurement next term, we decided to have a look at it.

We had a great afternoon drawing chalk circles with a diameter of 1m, as well as spray painting a circle on the oval of 10m and another with a massive diameter of 100m. We then measured the circumference of each.

While our measuring skills were not perfect (who knew that measuring around the outside of a circle was hard!), we did realise there was a bit of a pattern between each circle. After researching Pi, we found out that each circle involved this ‘magical’ number.

A 1m circle has a circumference of 3.14m, a 10m circle has a circumference of 31.4m and a circle with a 100m diameter has a circumference of 314m.

We then investigated further and realised that if you multiply the diameter of a circle by 3.14 then you will get the circumference of any circle.  Sometimes you are only given the radius, and so you need to double this first!

We have some clever students who can remember Pi to over 10 digits (Peter can do it to over 50!). How many can you remember? (http://www.piday.org/million/)