2
Lines, shapes and colours
ICT P4 Term 2, Theme 4: pp. 70–73
GoalCombine shapes, lines and colours to build a picture, and fix it with zoom and select.
New words
shape · a simple form such as a square, triangle or circleline · a long thin mark, straight or curvedcolour · red, blue, green and so oncombine · to put things together to make one thing
Explanation
Any picture can be built from simple shapes. A house is a rectangle with a triangle on top. A car is two rectangles and two ovals for the wheels. Choose a shape tool, drag to make the shape, and use lines to add details such as windows. Then fill each part with a colour. Zoom in to see tiny gaps, because colour spills out of a shape that is not completely closed. Use select to move a part. Choose colours that go together and do not use too many. On paper you can do the same with a ruler and a pencil.
| Picture | Shapes |
|---|---|
| House | a rectangle (walls) + a triangle (roof) + a small rectangle (door) |
| Car | two rectangles (body and window) + two ovals (wheels) |
| Tree | a rectangle (trunk) + an oval (leaves) |
Worked examples
| Part | Shape | Number |
|---|---|---|
| Body | rectangle | 1 |
| Window | small rectangle | 1 |
| Wheels | oval | 2 |
Hana fills the roof of her house and the colour spills over the whole page, because there is a tiny gap in the roof line. She zooms in, closes the gap with a line, and fills again, and now it works.
Omar draws a tree with only three colours: brown for the trunk, green for the leaves and blue for the sky.
Class activity
A picture from shapes. Using only squares, rectangles, triangles, circles and lines, draw a felucca, a house or a bus on squared paper. Count how many shapes of each kind you used and write the numbers. Colour with at most three colours.
Practice
1
A tree has one rectangle for the trunk and three ovals for the leaves. How many shapes does it have?
4 shapes, because 1 + 3 = 4.
2
Which two shapes make a simple house?
A rectangle and a triangle.
3
Why might the fill colour spill over the whole picture?
Because the shape has a gap and is not closed. We zoom in and close the gap.
4
Which tool helps you see a tiny gap? Say the letter.
C, zoom.