The video tutorial introduces the concept of area as the space inside a 2D shape, measured using squares. It explains how to calculate the area of shapes using a grid and demonstrates the rule for finding the area of rectangles by multiplying length and width. The tutorial also covers how to apply this rule to irregular shapes by dividing them into rectangles. Through examples, it illustrates why the area calculation rule works and how to express area in square units.

Why can't we use centimetres or metres to measure area directly?

• They are too small to measure area.

• They only measure distances in a straight line.

• They are not accurate enough.

• They are not used in mathematics.

Tags

CCSS.3.MD.C.6

What is the area of a shape with 15 squares?

• 15 square inches

• 15 square metres

• 15 square centimetres

• 15 squares

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

How do you calculate the area of a rectangle?

• Add the length and width.

• Multiply the length by the width.

• Subtract the width from the length.

• Divide the length by the width.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

If a rectangle has a length of 7 metres and a width of 4 metres, what is its area?

• 11 square metres

• 28 square metres

• 21 square metres

• 14 square metres

Tags

CCSS.3.MD.C.6

Why does the formula for the area of a rectangle work?

• Because it is a mathematical rule.

• Because it is based on the number of squares that fit inside the rectangle.

• Because it is used in all shapes.

• Because it is easier to remember.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

What is the area of a rectangle with a length of 8 centimetres and a width of 3 centimetres?

• 32 square centimetres

• 11 square centimetres

• 24 square centimetres

• 15 square centimetres

How can you calculate the area of an irregular shape?

• By using a ruler.

• By dividing it into rectangles and calculating each area.

• By dividing it into triangles.

• By measuring its perimeter.

What is the first step in finding the area of an irregular shape?

• Measure the entire shape.

• Divide the shape into smaller rectangles.

• Calculate the perimeter.

• Estimate the area.