Magic mindreading maths tricks

A brilliant way to practise numeracy and algebra!

"I think of a number... add 5... double the result, subtract three.. now take away twice the number you first thought of... what have you got?"

See all over the internet (!) and http://www.iwbmathstraining.co.uk/index.php?option=com_2j_tabs&Itemid=24 (A9: Number Magic)

Mathematical hats for very low temperatures

Klein Bottle Hats (http://kleinbottle.com/klein_bottle_hats.htm) : not only nifty mathematical objects themselves, but the sales page includes some intriguing sentences -

Warm in the winter? Yes, indeed! They may be single-sided but they're double-walled, so your head enjoys twice the insulation of a standard ski-hat. There's two layers of wool between your head and that cruel winter wind. Works down to minus 40 degrees (F or C, your choice) !

Fun Stuff For Calculus

Includes the Quadratic Formula song.

http://www.calculus-help.com/funstuff/

BBC Learning Zone: Class Clips

Thousands of clips, arranged by stage and subject, with ideas for how they can be used in lessons:

http://www.bbc.co.uk/learningzone/clips/

Maths Bingo

V useful for quick revision.

Basic version: ask pupils to draw a 4 x 4 grid (mini whiteboards, rough book...) and choose 16 integers from 1 to 20, writing one in each square. You then ask questions for which each of these is an answer; these can be varied according to topic/ability etc. Keep a note of the questions you have asked. First pupil to cross off four answers in a row shouts "Bingo" (or "Hurrah for Sums" or similar).

With prep version: prepare lists of questions and answers in advance and give pupils a list of possible answers to choose from.

The Nonagon Song

I love this song! Via Kate Nowak.

http://www.youtube.com/watch?v=z5m8BWk5LoQ

 

Positive and negative numbers: Connect Three

A good game for practising positive and negative numbers (from nrich):

http://nrich.maths.org/5911