Understanding decimals …one of the tricky topics in mathematics.

tenths, hundredths and thousandths…and we are not talking about fairy bread.

Here is a site worth spending a few minutes on.

Let me know if you think it was helpful.

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One Summer I remember ( I was about 11 ) setting up a lemonade stand with my brother and sister and the children from 2 other families who lived down the street where we lived.

Our special recipe consisted of water, freshly squeezed lemons and fruit saline ( the secret to our success).

We set up a card table out the front of our neighbour’s house, grabbed a number of glasses, ( back then honey and peanut butter was sold in jars that could be used as glasses once you rinsed them out) and made a sign using our Derwent pencils.

Our neigbours became our faithful customers. We made enough money each to buy an ice cream.My favourite was something called a ‘Cream Between’.

This probably sounds like a sad tale compared to the success you may have experienced playing the Lemondade Stand game. How successful were you?

** What did you learn from your analysis of the game?**

By the way….according to a very well know saying….”The customer is always right.”….epecially if you are a duck!!! This will make sense if you watch this video. *( courtesy of school tube )*

Watch the video below. and then, yes you guessed it, watch it again and probably again.

Can you explain why this maths appears to be correct?

Record the steps taken and be prepared to share your work and opinion in class next week.

The puzzle ‘Egg of Columbus’ appears at first glance to be a simple tangram puzzle. All you need to do is use the 9 pieces of the egg to create 6 basic shapes. You must use all of the pieces, none of which are allowed to overlap. Sounds easy???

It became very apparent, after a few short minutes that this egg puzzle was proving to be difficult to crack. The ability of students to persist and think creatively was being tested with the levels of frustration within the classroom rising with every minute.

Students achieved variable degrees of success. After all, we can’t all be spatially talented. Only a few children managed to find all six solutions. Most managed to complete three or four and came to the conclusion that just because something looks easy doesn’t mean that it is.

Oh…and for those few inquisitive students who wanted to know how the puzzle got its name… click here.

“Come in spinner” is a term that is associated with the game of Two Up. This is a uniquely Australian game in which bets are made on the chances of two coins falling with either heads or tails landing face up.

If you do the maths, then the chances of tossing a head or a tail should be 50/50. In reality this may not necessarily be true.

You should probably visit the link to “Adjustable Spinners”.

Oh…and don’t forget to do the maths!

A play on words or is ‘Bob’ playing with words?

You be the judge. Tell me what you think and why.

Watch the video clip. ( Sorry once again…this cannot be viewed at school.)

Alternatively you can obtain the video from the ‘to collect folder’ on students.

View this classic ‘Ma and Pa Kettle’ video.

Ask yourself…does this make sense or is it mathematical nonsense?

Can you explain how Ma and Pa Kettle used what appears to be correct calculating to arrive at an incorrect answer ?

You have a whole week to do so.

A reward will await you!

Microsoft Visio… This week we used this software to create a two dimensional representation of our bedroom. We needed to base our final plan on the real dimensions of the room ( measured in metres and centimetres), the furniture and other fixtures such as windows, doors and in one case…a peephole. We didn’t need to include such detail as the odd sock or two lurking under the bed or similar clutter.

The Achitect’s Puzzle is a Maths activity that has taken up much of our class time over the last week or so. This task required students to work through a sequence of activities.Working with a partner, students first needed to find all possible models that can be constructed using 4 cubes. Sounds easy doesn’t it?

For some it was a real challenge! As each combination was discovered, it had to be recorded on isometric paper as a three dimensional diagram. Sounds easy doesn’t it??

Once all the diagrams had been completed, children formed groups of four to create a bird’s-eye view plan of our Earn and Learn Community (otherwise known as our double classroom.) Sounds easy??? It may well have been except for the fact that it had to be drawn to scale. Not so easy!The isometric drawings which represented our Earn and Learn businesses and had to placed onto their plan. Finally the easy bit… students could add detail to their plan such as roads, parks and other community facilities.

This week all the finished plans will be displayed and one successful group of “architects” will have the honour of having their plan voted on as the winning Earn and Learn Community plan.

The winning entry will be posted soon. Watch this space!