Imbalanced diet: obesity
Lesson details
Learning outcome
I can explain the effects on the human body of consuming too much food.
Key learning points
- Not consuming a balanced diet can lead to ill health.
- Body mass index (BMI) is calculated from a person’s height and body mass.
- Consuming too much food can cause BMI to become too high, and lead to obesity.
- Effects of obesity on the human body.
- Obesity can increase the risk of developing other health issues, including heart disease.
Keywords
BMI - Body mass index (BMI) is a measure that compares your weight and height to assess whether they are in a healthy proportion.
Obesity - When someone has a BMI of 30 or above.
Coronary heart disease - A condition in which the coronary arteries become blocked.
Type two diabetes - When a person cannot control their blood sugar levels.
Common misconception
We should not eat fat.
Fat makes up an important part of our diet. We use it as a store of energy and to make cell membranes.
Teacher tip
Try to emphasise how important it is to have fat in the diet. It is the imbalance of energy in the diet that causes weight gain. Ultra processed foods should be avoided and more wholefoods should be included.
Content guidance
Depiction or discussion of sensitive content
Depiction or discussion of mental health issues
Supervision
Adult supervision required
Licence
Lesson video
Loading...
Prior knowledge starter quiz
6 Questions
Q1.Which foods should be limited in a balanced diet?
Q2.Which nutrients provide energy?
Q3.Joules is a measurement of in our food.
Q4.Put these BMI categories into order of increasing size.
Q5.There are kcal in a 100 ml of this orange juice.
Q6.There are kJ in a 100 ml of this orange juice.
Assessment exit quiz
6 Questions
Q1.If a woman has a BMI of 32, which weight category would that put her into?
Q2.We calculate BMI using the equation body ÷ (height)²
Q3.Which types of food are linked with obesity?
Q4.Which instrument can you use to measure body fat as an alternative to BMI?
Q5.Which one of these is not linked to obesity?
Q6. heart disease happens when the blood vessels that supply the heart with blood get blocked with a buildup of fatty substances.
To help you plan your 8 science lesson on: Imbalanced diet: obesity, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 8 science lesson on: Imbalanced diet: obesity, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 3 science lessons from the Diet and exercise unit, dive into the full secondary science curriculum, or learn more about lesson planning.