5 Maths Gems #25

Gems 18 I featured 5 ideas from the showtime 100 issues of Chris Smith's newsletters. I promised I'd move dorsum with to a greater extent than newsletter gems, therefore today's post features to a greater extent than or less highlights from issues 101 - 250.

Chris's newsletters are really pop with maths teachers - he instantly has over 1,000 subscribers. Each week's newsletter is total of instruction ideas, puzzles, jokes together with mathematical trivia - it's ever a pleasance to read. If yous don't already subscribe, email Chris to learn on the list.

1. Number Stories
In Issue 123, Chris featured an reckon for developing mathematical vocabulary. Students do their ain number stories - this tin move every bit uncomplicated or complex every bit yous like. Chris included the basic event below for inspiration.
 2. Fractions together with Percentages
Another uncomplicated precisely effective activity was featured inwards Issue 113. Students brace off the numbers below (which yous could impress onto cards) to shape fractions equivalent to the percentages inwards the table. One response is already given.
3. Remembering Bearings
There's iii cardinal points that students request to retrieve nearly bearings. And remembering them is every bit tardily every bit 123...
This reckon originated from @kimmychuck together with featured inwards Newsletter 245.

4. Guess Who
In my post nearly Desmos Polygraph I described it every bit a digital (and mathematical) version of Guess Who. Back inwards Issue 210, Chris wrote nearly a similar reckon (originating from Jennifer Clark) which uses actual Guess Who boards - these are available for £3.50 on eBay. The painting demo below shows a guessing game for famous mathematicians. Jennifer likewise suggests putting the numbers 1 - 24 inwards the holders. For event I powerfulness select the number 12 together with my partner would convey to inquire me questions (eg is it prime?, is it a multiple of 4? is it square? etc) to operate out what number I've chosen past times a procedure of elimination. This is a prissy means to prepare vocabulary together with cognition of number properties. It could move used for other topics eg polygons, linear graphs together with parabolas. I'm non certain it would move practical to laid this upward for a whole class, precisely it would move a prissy activity for dandy parents to do at abode with their children if they convey an onetime Guess Who game.
5. Factor Visualisation
These animated factorisation diagrams are lovely. They're worth showing to your students when yous learn prime number factorisation. The animation moves rapidly precisely tin move paused together with reversed. It shows numbers arranged inwards accordance with their prime number factors. For example, ix is shown every bit iii groups of three, 10 is 5 groups of 2 together with xi is prime, therefore in that location is no grouping.
Visualisations of 9, 10 together with 11
The animation is mesmorising.  Background information is available Off on a Tangent - a post nearly opportunities to move spontaneous inwards maths lessons together with whether schemes of operate allow us to explore off-topic interesting mathematics.
  • Stretching Practice - a post nearly where to notice challenging practise questions together with resources.
  • It's solely iii weeks until La Salle Education's National Mathematics Teacher Conference in Birmingham - I'm actually looking forrad to it (don't forget to learn a costless ticket if yous haven't already!). This calendar week I've been busy writing my session, which is all nearly option methods for explaining mathematical concepts. See yous then!

    Joke from Issue 169