Measure area using counting with squares as a strategy

Maths

In this unit pupils will explain what area is and measure using counting as a strategy. They will make different shapes with the same area and compare the area of different shapes. In the future unit pupils will calculate the area of a rectangle using multiplication and use their knowledge of area to solve problems.

In the prior unit pupils completed and composed symmetrical shapes from two congruent shapes and investigated lines of symmetry in 2D shapes. In this unit pupils will explain what area is and measure using counting as a strategy. They will make different shapes with the same area and compare the area of different shapes.

Understand the concept of area

This shape has an area of {{  }} square units. 

Add the square made of four squares to the rectangle made of 24 squares.

Subtract the square made of four squares from the rectangle made of 24 squares.

Which strategies could be used to find the area of this shape? Select all that apply. 

Put the missing words from the sentence into the correct order: ___ is the measurement of a ___ surface. It measures a ___ space.

Which of these shapes is most commonly used for measuring the area of a 2D space, because it tessellates so well and has right angles? 

Which of the following shapes are rectilinear?

Count the squares in one column and then count in steps of that number. 

Count the squares in one row and then count in steps of that number. 

What is the most efficient way of finding the area of this rectangle? 

I am counting in threes: 3, 6, 9... Tick all of the numbers that would appear in the sequence when counting in threes.

This lesson will soon be taken down.

Measure area using counting with squares as a strategy

Lesson outcome