Activity Introduction

In this lesson, the students learn about sugar – where it comes from and how it is used in our body.

We take a closer look at our body and explore how sugar is moved around. The students take part in a fun and simple experiment to learn how our kidneys filter our blood. The students use a predict, observe and explain inquiry process uncovering what our kidneys do and how they help us stay healthy.

Learning Intentions

  • Students understand how sugar is made by plants
  • Students begin to understand the effects of sugar on our bodies.

Lesson & Curriculum Details

  • This lesson is part of the wider unit of work SugarByHalf – Lower Primary – Sugar and Healthy Kidneys
  • Time required: 90 mins.
  • Level of teacher scaffolding: High – lead discussions and assist in the experiment with the students.
  • Keywords: human body, sugar, kidneys, science understanding, biological science, SugarByHalf, Filter Your Future.

To view our Australian Curriculum alignment click here.

To view our NZ Curriculum alignment click here.

Resources Required

  • Device capable of presenting a video to the class
  • P.O.E Student Worksheets
  • Experiment Equipment:
    • 12 household sponges cut in ½ (or kidney-shaped)
    • 12 small flat trays, 3L water
    • food dye
    • 1L of orange juice with pulp
    • 24 empty cups (2 for each group)
    • 1-10L bucket and 1 large stirring spoon


Cool Australia’s curriculum team continually reviews and refines our resources to be in line with changes to the Australian and New Zealand Curriculums.


Teacher Worksheet

Teacher Preparation

Learning intentions: Students will...

  • ... understand that plants make sugar
  • ... begin to understand the effects of sugar on our bodies.

Success criteria: Students can…

  • ... state that plants make sugar
  • ... describe that blood is moved around the body
  • ... complete an experiment to show how the kidneys filter blood.

Teacher content information: 

SugarByHalf ( promotes action to reduce sugar-related diseases so that Australians live better, stronger and healthier lives.

Their message is simple: to reduce added sugar consumption by half. Eating too much added sugar is a key driver of serious health problems including obesity, type 2 diabetes, kidney disease, heart disease, tooth decay, dementia and mental health conditions. A poor diet also puts children behind their peers, impacting their brain development, sleep and ability to learn. Poor diet choices ultimately mean that this generation of children could be the first in moder

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Student Worksheet

Thought Starter: How do our kidneys keep us healthy?

P.O.E Worksheet

Fill in each section as you complete the experiment.

P-  predict

I think that….


O - observe

I saw….


E - explain

I can explain….

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