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# Pulling force

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### Pulling force

1. 1. Pulling - Force
2. 2. Theme : Pulling Curriculum Strand: Energy and forces Strand Unit: Forces
3. 3. Objectives  - discover how objects move through interaction with ‘WeDo 2.0’ robot  - explore the effect of friction on movement through experimenting with the robot on different surfaces  - investigate the idea of force through the use of the robot and various different weights
4. 4. Skill Development
5. 5. Resources Required
6. 6. Connect  What is a force?  What things do we push or pull on a daily basis?  Importance of force  Tug-o-war activity  Change the amount of children on each side of the rope to find equal force  Look at friction – take off shoes  What effect does friction have?
7. 7. Construct  Children building their model  Questions :  How does the model work?  How does the model move?  How could we use this model to test force?  What could you add to make the model better/stronger?  How could we make the model move for longer?
8. 8. Contemplate  What weight is needed to balance the pulling force?  How do you know when the force is balanced?  What factors could you change in order to increase/decrease the pulling force?  Emphasise fair test!  The children will then investigate the machine pulling the weight on different surfaces
9. 9. Analysing  What surface will the machine pull the most weight on?  What is the maximum weight the machine can pull?  Why is x the best surface?  From your results what can you conclude about the effect of friction on force?  The children will present their fair test to the class in the form of a group presentation using recording sheets and images.
10. 10. Continue How could you alter the machine to increase/decrease the pulling force?
11. 11. Integration  Science – Scientific method: conducting a fair test.  Literacy – Oral language development (tier 3), engagement with procedural writing.  Maths – Problem solving, analytical skills.
12. 12. Assessment  Formative : teacher observation (note taking), conferencing with the children throughout the lesson, thumbs, traffic lights  Summative: self assessment e.g what would you do differently if you had to do it again?, group presentation