Key Concept: FormRelated Concepts: Measurement, SpaceGlobal Context:
Statement of Inquiry:
Conceptual Concept Questions: How do angles in various triangles and quadrilaterals relate to each other?Where do angles arise in other subjects? What is the biggest angle? Debatable Concept Questions: How do we measure angles?How accurate should an angle be measured/drawn to?What is the biggest angle?
•Know and use the terms: line, line segment, parallel, perpendicular, intersect, angle, vertex
| ## Robert Lang: The math and magic of OrigamiTASK: Origami Introduction:1. Have fun making different origami figures. 2. Choose one of your figures to work with during this unit. 3. Make two more of your chosen figure. (ensure your folds are as sharp as you can make them)TASK: Exploring your chosen figure1. Take one of your figures and unfold it completely. 2. Using a ruler and a pencil draw lines over each fold. 3. Find and label one each of the following angles on your paper: Y7 Angles 4. Copy the table below into your books.
5. For each of the angles you have labelled, do the following recording the values in your table: i. estimate the size of the angle before you pick up a protractor and record it on your table; ii. take a protractor and look at how large different angles are. WITHOUT putting this protractor on your piece of paper, estimate for a second time the size of each angle; iii. using the protractor, measure your angles. 6. Did you measure your right angle and straight angle?? Were they actually 90 and 180 degrees? 7. Which angle out of acute, obtuse and reflex were your estimations more acurate for? Why do you think this was? 8. How many of each angle do you have on your paper? Count them and record this in your exercise book. Extra challenge: Work out the "Percentage Error" between your first estimate for an angle and the actual measured angle size. TASK: LinesY7 Lines 1. Find and label (using correct notation) two sets of parallel lines and two pairs of perpendicular lines on your unfolded origami figure (the one where you labelled angles). 2. In your exercise books, define the following: line, line segment, intersection and vertex3. Find and label on your unfolded origami paper one line segment, one intersection and one vertex. TASK: Relationships between anglessee class handout ## Y7 Angle RelationshipsY7 Angle Relationships |

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