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July 2015
In this edition of the News you will find:
Video: Billiard Ball Bounces
New Classroom Contribution
New Investigation Guide
Tasks of the Month
Task 213, Chains
Task 214, Angle Estimation
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- Video: Billiard Ball Bounces
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Billiard Ball Bounces is a Maths300 lesson which doesn't grow from a task. But as Matt Skoss shows us in this video made at a professional development session, it can start very practically on the floor. All you need is a set of cards about 20cm square and a length of coloured cord. The cards are used to make a 'billiard table' of any size, in this case 6 x 5, and the cord traces the path of a ball hit from the bottom left pocket. The challenge is to predict the number of bounces before the ball 'drops' into a corner pocket.
Floorboard experience is followed by graph paper drawings and software exploration. See Link List below for the Cube Tube video and a link to Maths300.
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- New Classroom Contribution
It was a bottom drawer find.
You know, that part of the filing cabinet where you put things to use later ... then when later comes you forget you have it ... then later still you rediscover it when you are looking for something else. In this case it was an envelope postmarked 1998 in the Task Centre drawer, from Andy Martin in England.
In 1998 the Task Centre Project had been running for six years.
The envelope was full of reports from Andy's Year 8 students on the shapes they had made stimulated by what is now Task 168, Mirror Patterns 3. In fact, it was this class's work that led to the addition of the task to our collection in 1999.
The student work is startling stuff. Too much to publish it all, so we have made a selection of three students' work and added a challenge from the student who claims to have made the most. The result is a fascinating From The Classroom link that could be a talking point at your next faculty meeting.
See Link List below.
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- New Investigation Guide
In the same drawer was the beginnings of an Investigation Guide to extend Task 3, Doug's Tablecloth. See Link List below. The task involves folding a piece of cloth to fit in a drawer, the focus being to actually get it into the d...n drawer!
Several extensions are suggested in the cameo, but this new Investigation Guide (so new that the key elements of it were written in 1993!) shifts the focus. Using paper, it uncovers patterns that develop when the number of folds is connected to either the number of parts, or the number of creases. Then it asks, what happens if we change the way the paper is folded.
- Tasks of the Month
Two new cameos this month.
The Task Cameo Content Finder has been updated to include these tasks.
- Chains is a game that involves placing cubes on a row of cells. Each block placed scores at least one point, but if it can be placed to make a chain of blocks the score becomes the number of blocks in the chain. The challenges begin with finding the highest and lowest possible score. What about the scores between; are they possible? And what happens if we change the length of the playing board? Interesting number patterns is the answer to that question.
- Angle Estimation uses a Rotagram to estimate angles and provides two protractors (5º and 1º) to check the estimates. The Rotagram reinforces the concept of an angle being the shape made by two rays with a common starting point and the measurement of an angle being the amount of turn between the rays. Students practise both estimating and measuring and the iceberg is opened up when they discover how to use the Rotagram to add angles.
Click a photo to access its cameo, or access all current cameos through the Link List below.
Keep smiling,
Doug.
Link List
- Did you miss the Previous News?
If so you missed information about:
- Rediscover Maths300
- ...and more...
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