Stretchiness

Activity time:2 hours                       

Level / prior knowledge: Level 4/5, percentages, measure,

Subject / curriculum links / skills: Percentages increases

Preparation time: 30 mins - making smartboard for the lesson, looking over the lesson, buying and bagging up different types of sweets, making data collection sheets.

Extra resources: Smartboard file, sweets.                            

Commentary:

I used this resource with year 7 set 5 (level 4) during investigation week.  To make the experiment easier I told them how to work out percentage increases with a calculator.  A more able group can probably do this more independently.  It also took my class 2 lessons (experiment and analysis) a more able group you could do it in less time.

The lesson was easy to follow with a good example of analysis.  As a class we investigated types of sweet stretchiness.  The pupils really enjoyed the experiment, they were engaged for the whole hour and did not realise they were doing work.  The next lesson we discussed how to analyse the data, using the example, this helped pupils focus on what they needed to put on their poster for each type of sweet.  To end, pairs explained what they had found out, using their poster.

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