Multiplication trick: X by 25

26 05 2010

A neat trick to multiply any number by 25 in your head nice and quickly:

Multiplication trick

Credit goes to the mathchat blog!

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Puzzle: NRich Maths- Painted Cube Investigation

26 05 2010

This week I used a fantastic open-ended investigation with my top-set Year 9 class. The problem was taken from the NRich Maths website and was called Painted Cube. It is based around the idea that a large cube (made up from smaller cubes) is dipped into a pot of paint, removed and the paint left to dry. You then dismantle ┬áthe big cube (pulling the smaller cubes apart) and investigate the following questions: Read the rest of this entry »





Why is algebra so useful?

26 05 2010

Why do we need algebra? What is it useful for?

Here’s a great article on the Republic of Mathematics blog showing how we can use algebra to solve a very interesting maths problem about probability.

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Maths class needs a makeover: TED talk by Dan Meyer

17 05 2010

When you teach someone some maths, what you think maths is all about really affects the way that you teach it. Teachers’ own beliefs about how maths works and what it is used for strongly influences the way that they teach the subject. Teaching is an art and a very creative process where you have to decide the best way to communicate an idea to your pupils so that they understand it.

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How to: find a percentage of a quantity

17 05 2010

Find 27% of 250. Need some help with how to do this? If yes, read on!

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Great maths website: NRich Maths

10 05 2010

This is one of my favourite sites for getting resources for lessons and interesting homeworks. If you’re a student, there’s loads of maths puzzles and games to get you thinking as well as articles explaining interesting bits of the history of maths. If you’re a teacher, it’s an excellent site for getting enrichment based resources, many of which are interactive and work great up on the interactive white board. I use the puzzles on the site a lot to extend my more able pupils.

The site publishes a monthly ‘magazine’ which you can subscribe to by email and features new puzzles, resources and information about the site.

Check out NRich Maths and have some fun!

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Apparently I’ve got multiple intelligences! That’s awesome but what are they?

5 05 2010

You knew it all along. You are so smart you can’t use just one measure of intelligence to measure your brain power. You are a complex, multi-faceted genius and you need to measure your greatness in many ways. Read the rest of this entry »