week 14 - virtual experiment science and concept map

8/8/2019 WEEK 14 - VIRTUAL EXPERIMENT SCIENCE AND CONCEPT MAP

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Shapes

Introduction

You need to know the properties of the different types of triangle and square. Circles alwayshave a radius, a diameter, and a circumference. You also need to know about other polygons

such as hexagons and pentagons.

The perimeter is the length of the sides of a shape, and the area is the surface area that it covers.

You need to know how to work out how many lines of symmetry a 2D shape has.

3D shapes have faces (sides), edges and vertices (corners). A net is what a 3D shape would look

like if it were opened out flat.

This section includes:

Triangles

Quadrilaterals

Circles

Polygons

Perimeter and area

Symmetry 3D shapes

Nets of 3D shapes

Triangles

Triangles have three sides. There are many different types of triangles:

Equilateral triangle

3 equal sides

3 equal angles of 60
http://www.bbc.co.uk/schools/ks2bitesize/maths/shape_space/shapes/read2.shtmlhttp://www.bbc.co.uk/schools/ks2bitesize/maths/shape_space/shapes/read3.shtmlhttp://www.bbc.co.uk/schools/ks2bitesize/maths/shape_space/shapes/read4.shtmlhttp://www.bbc.co.uk/schools/ks2bitesize/maths/shape_space/shapes/read5.shtmlhttp://www.bbc.co.uk/schools/ks2bitesize/maths/shape_space/shapes/read6.shtmlhttp://www.bbc.co.uk/schools/ks2bitesize/maths/shape_space/shapes/read7.shtmlhttp://www.bbc.co.uk/schools/ks2bitesize/maths/shape_space/shapes/read8.shtmlhttp://www.bbc.co.uk/schools/ks2bitesize/maths/shape_space/shapes/read9.shtmlhttp://www.bbc.co.uk/schools/ks2bitesize/maths/shape_space/shapes/read3.shtmlhttp://www.bbc.co.uk/schools/ks2bitesize/maths/shape_space/shapes/read4.shtmlhttp://www.bbc.co.uk/schools/ks2bitesize/maths/shape_space/shapes/read5.shtmlhttp://www.bbc.co.uk/schools/ks2bitesize/maths/shape_space/shapes/read6.shtmlhttp://www.bbc.co.uk/schools/ks2bitesize/maths/shape_space/shapes/read7.shtmlhttp://www.bbc.co.uk/schools/ks2bitesize/maths/shape_space/shapes/read8.shtmlhttp://www.bbc.co.uk/schools/ks2bitesize/maths/shape_space/shapes/read9.shtmlhttp://www.bbc.co.uk/schools/ks2bitesize/maths/shape_space/shapes/read2.shtml


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Isosceles triangle

2 equal sides 2 equal angles

Scalene triangle

No equal sides No equal angles


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Right-angled triangle

One of its angles is a right angle (90)

Quadrilaterals

Quadrilaterals have four sides. Here are some special quadrilaterals:

Square

4 equal sides

4 right angles


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Rectangle

2 pairs of equal sides 4 right angles

Rhombus (squashed square)

4 equal sides

Opposite sides are parallel

Opposite angles are equal


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Parallelogram (squashed rectangle)

2 pairs of equal sides Opposite sides are parallel

Opposite angles are equal

Trapezium

One pair of parallel sides of different lengths


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Kite

2 pairs of equal sides next to each other No parallel sides.

Triangles


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Triangles have three sides. There are many different types of triangles:

Equilateral triangle

3 equal sides

3 equal angles of 60

Isosceles triangle

2 equal sides

2 equal angles

Scalene triangle

No equal sides


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No equal angles

Right-angled triangle

One of its angles is a right angle (90)

Polygons

Polygons are shapes with many straight sides:

Regular polygons have equal angles and sides of equal length.

Irregular polygons have sides of different lengths.

Here are some common polygons:

Pentagons have 5 sides:


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A regular pentagon

Hexagons have 6 sides:

A regular hexagon

Heptagons have 7 sides:

A regular heptagon


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Octagons have 8 sides:

A regular Octagon

An irregular pentagon


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Hexagons have 6 sides:

An irregular hexagon

Heptagons have 7 sides:

An irregular heptagon

Octagons have 8 sides:

An irregular octagon


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Perimeter and area

What is perimeter?

The perimeter is the distance all the way around the outside of a 2D shape.

To work out the perimeter, add up the lengths of all the sides.

The perimeter of this shape is 5 + 5 + 10 + 10 = 30 cm:

What is area?


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The area of a 2D shape is the amount of surface it covers. The units for area are cm2 (square centimetres), m2 (square metres) or km2 (square

kilometres).

To work out the area of a rectangle, multiply its length (the longer side) by its width (the

shorter side):

area = length width

The area of this rectangle is 6 x 4 = 24 cm2:

Symmetry A 2D shape is symmetrical if a line can be drawn through it so that either side of the line

looks exactly the same. The line is called a line of symmetry.

Square 4 lines of symmetry

Equilateral triangle 3 lines of symmetry


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Rectangle 2 lines of symmetry

Isosceles triangle 1 line of symmetry

Parallelogram 0 lines of symmetry


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3D shapes 3D shapes have faces (sides), edges and vertices (corners).

The exception is the sphere which has no edges or vertices.


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Must do:-Which of the only shape has the only flat faces? Which of the shape have curved face?

Should do:- Two of the shapes have 12 edges. Can you find these two shapes? You know youre

scalene from your isosceles?

Could do:-Which one of the shape has one vertex?

Does This activity will sharpen up your shape knowledge.

Maths > Shape and space > Shapes - Quiz

A triangle with three equal sides is called

an equilateral triangle

an isosceles triangles
http://www.bbc.co.uk/schools/ks2bitesize/mathshttp://www.bbc.co.uk/schools/ks2bitesize/maths/shape_spacehttp://www.bbc.co.uk/schools/ks2bitesize/mathshttp://www.bbc.co.uk/schools/ks2bitesize/maths/shape_space


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a scalene triangle

2. A triangle with two equal angles is called

an equilateral triangle

an isosceles triangle

a scalene triangle

3. Which of these shapes has no lines of symmetry?

Square

Rectangle

Scalene triangle

4. I have four equal sides and four right angles. What am I?

Square

Rectangle

Rhombus

5. I have two pairs of equal sides. My opposite sides are parallel. I have no right angles.

What am I?

Rectangle

Kite

Parallelogram


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6. The distance halfway across a circle is called

the circumference

the radius

the diameter

7. A rectangle has sides of 6 cm and 2 cm. What is its perimeter?

12 cm

16 cm

24 cm

8. A 2D shape with 6 sides is called

a quadrilateral

a pentagon

a hexagon

9. How many vertices does a square-based pyramid have?

8

6

5

10. A square has sides of 5 cm. What is its area?

25 square cm


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20 square cm

10 square cm

Check Score

week 14 - virtual experiment science and concept map

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