Scaled Drawings Working with Scales Making Simple Scale Drawings

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Presentation transcript:

Scaled Drawings Working with Scales Making Simple Scale Drawings Harder Scale Drawings Compass Points Bearings

Scale Drawings & Bearings Learning Intention Success Criteria 1. To understand the term scale drawing and how they are used in real life. To be able to understand the term scale drawings. 2. Interpret scale drawing into real-life measurements.

Scales Definition A scale of 1 cm = 2m This simply means for every 1cm measured on a drawing this represents 2m in real-life.

Scales In order to make sense of a map or scale diagram the scale must be known. For this scale model 1 cm represents 1m 4 cm This means for every 1 metre of the actual car, 1cm is drawn on the map.

Scales 1cm = 5m 6cm 6 x 5 = 30m The scale of this drawing is What is the actual length of the tree ? 6 x 5 = 30m

Scales 1cm = 90cm 5cm 5 x 90 = 450cm 4.5m The scale of this drawing is What is the actual length of the bus in metres ? 5cm 5 x 90 = 450cm 4.5m

Scale Drawings & Bearings MTH 2-17c MTH 2-17d MTH 3-17b Learning Intention Success Criteria 1. Interpret information in a problem and create a suitable scale drawing. 1. To draw a scale drawing given suitable information. www.mathsrevision.com 25-May-19 Created by Mr. Lafferty Maths Dept.

Scaled Drawings Problem A garden is rectangular in shape and MTH 2-17c MTH 2-17d MTH 3-17b Problem A garden is rectangular in shape and has length 12m and breadth 8m. Make rough sketch of the garden. 12m Draw an accurate scaled drawing of the garden Use a scale of 1cm represents 2m www.mathsrevision.com 8m 25-May-19 Created by Mr. Lafferty Maths Dept.

Created by Mr. Lafferty Maths Dept. Scaled Drawings MTH 2-17c MTH 2-17d MTH 3-17b Use a scale of 1cm represents 2m 1cm represents 2m 12m 12m 8m www.mathsrevision.com 8m 25-May-19 Created by Mr. Lafferty Maths Dept.

Scaled Drawings Problem A road junction is triangular in shape. MTH 2-17c MTH 2-17d MTH 3-17b Problem A road junction is triangular in shape. A rough sketch is given below. Draw an accurate scaled drawing of the garden Use a scale of 1cm represents 2m www.mathsrevision.com 20m 12m 25-May-19 Created by Mr. Lafferty Maths Dept.

Scaled Drawings www.mathsrevision.com 20m 20m 12m 2 x 11.6 = 23.2m 12m MTH 2-17c MTH 2-17d MTH 3-17b Use a scale of 1cm represents 2m 1cm represents 2m Find the real life length of the 3rd side 20m 20m www.mathsrevision.com 12m 2 x 11.6 = 23.2m 12m 25-May-19 Created by Mr. Lafferty Maths Dept.