Grade:

Lesson Focus and Goals:

Materials Needed: Learning Objectives:

Subject: Date:

Lesson:

MATHS

Topic:

Maths 7-09-21Reception/Foundation

Mass 1 - Introduction to mass

Mass is used to identify how heavy or light an object is. Hefting is an

informal measurement unit

We can compare objects using

hefting.

1.

2. Sorting objects based on mass

Mighty Maddie

Powerpoint with learning objectives and

intentions

Mystery Bags - filled with different

objects

Picture of a man hefting

Structure/Activity

Students find their sit spots and show their whole body listening.

Recap from last week, that the measurement concept we looked at was length which is how long or

short something is, when measuring objects to find out the length we used our eyes and unifix cubes.

Tell students that we will be learning about how to measure objects in a new way. This week we are

going to measure objects using mass. This means we are going to find out how heavy or light an object

is.

Read 'Mighty Maddie', then discuss some of the different words the book used for mass.

Instruct students that today we are going to looking at the form of measuring mass which is hefting,

describe that heftinng is using our hands to heft and explore objects which are heavier and lighter.

(show hefting man and provide example).

Ask students to form a rectangle around the mat, instruct that we are going to use the new form of

measuring mass hefting. (pull out mystery bags) - show explicitly first.

choose students with their whole body listening to choose mystery bags. The student will then put one

bag in each hand, then use hefting to determine which is heavier or lighter. Pass the bags around and

see if all students agree. Then have a student place them in the heavier or lighter section of the mat.

At the end of the lesson ask the students 'what is mass?' and 'what is hefting?'.

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The Australian Curriculum

CPC

Supervising Teacher Breakdown of lesson

Measurement and Geometry

Content Descriptor: Using Units of Measurements - Use direct and indirect comparisons to

decide which is longer, heavier or holds more, and explain reasoning in everyday language

(ACMMG006 - Scootle )

Elaboration: using suitable language associated with measurement attributes, such as

‘tall’ and ‘taller’, ‘heavy’ and ‘heavier’, ‘holds more’ and ‘holds less’

Achievement Standard: Students can compare objects using mass, length and capacity.

Whole class learning

- Introduction (Find out what students know)Mass - what is it? Heavy and light

Hefting

Read book

- Main Ideahefting

Comparing

Sorting

- Conclusion (New information recap)Heavy vs light/ Heavier and Lighter

Finish with a song - Is it heavy or light? Jake Hartmann