Understanding Angles and Turns in Year 3 and 4 Mathematics
Explore the concept of angles as a measure of a turn in Year 3 and 4 mathematics. Learn to describe the direction of a turn, understand how angles are created, and identify patterns related to angles and turns. Engage in activities to practice recognizing and describing angles, as well as determining the direction after a specific turn.
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Presentation Transcript
Year 3 and 4 LI: Can I recognise angles as a measure of a turn? Steps to success: I can describe the direction of a turn. I can understand that an angle is created when 2 straight lines meet at a point. I know that an angle is a measure of the amount of turn between two lines.
In Focus Task What patterns do you notice?
In Focus Task What patterns do you notice?
Develop Learning If we start by facing ________ and make a _______ turn, what direction will we be facing? If we face ________ and turn to face _______, what turn have we made? If we face north and make a quarter turn clockwise, which direction will we be facing? What if we turn anti-clockwise? What would the time be if the minute hand started at 1, then made a quarter of a turn? Can you see any angles around the classroom?
Develop Learning What is an angle? We see angles where 2 straight lines meet at a point. An angle is a measure of the amount of turn between two lines
Develop Learning How do we describe turns? We can describe the direction of turn. anti-clockwise clockwise
Develop Learning How do we describe turns? We can describe the size of turn. 1 4turn 1 2turn full turn
Develop Learning How would you describe these turns? 1 2turn clockwise 1 2turn anti-clockwise 1 4turn anti-clockwise full turn clockwise
Develop Learning How would you describe these turns? 1 4turn clockwise 1 2turn clockwise 1 4turn anti-clockwise full turn clockwise
Independent Learning Have a go at questions 1 3 on the worksheet
Develop Learning What time will show on each clock after half an hour? quarter past 3 5 minutes to 4 Have a think
Develop Learning Here is a leaf before and after a turn. before after The leaf made a quarter turn anti-clockwise. The leaf made a quarter turn clockwise. Have a think
Develop Learning Here is a leaf before and after a turn. before after The leaf made a half turn anti-clockwise. The leaf made a half turn clockwise. Have a think
Develop Learning The crab turns to face the pink shell? How could we describe the turn? Have a think The crab could make a quarter turn anti-clockwise. The crab could make a three-quarter turn clockwise.
Independent Learning Have a go at the rest of the questions on the worksheet
The letter X has four angles. Write your name in capital letters. How many angles can you see in each letter? How many angles are there in your full name?
