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KS3 Science: Home experiments (5/6)

24 March @ 10:00 am - 10:50 am GMT



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In this KS3 Science topic students will explore how to safely conduct fun scientific investigations at home. Each lesson will involve learning how to do a science investigation and how to use it to develop scientific skills. The practicals will NOT be carried out during the lesson. Most students should be able to do the investigations afterwards if they have the appropriate equipment and adult supervision.

This topic follows part of the KS3 National Curriculum  for science and is an essential part of helping students prepare for taking GCSE Biology, Chemistry, Physics or other similar science qualifications. Even if the students have done the investigations before the focus of the lesson is about developing scientific skills.

Subject matter for these lessons will relate to one of the other KS3 science lessons taught during the week. Although it is not essential to take the related theory lesson they will support each other.

These lessons are typically suited to students aged approximately 10-14 years of age.

All lessons are live, interactive and delivered to small groups (maximum of 8). If you have questions about this topic or any other, please don’t hesitate to get in touch.

Prior Learning: No specialist prior learning is required but age appropriate maths skills will be helpful.


Lesson 1 (Weds 24th Feb): Exploding lunch bags – How does changing the temperature of water effect the rate of reaction? Variables and planning.

Equipment:  Zip lock freezer bags, baking soda, water, kettle, vinegar, tissues, goggles, thermometer, measuring jug

(Related lesson: Mon 22/02/21  KS3 Science – Acids and Alkalis)


Lesson 2 (Weds 3rd March): Flower dissections – Identifying different parts of a flower. Observation and dissection skills.

Equipment needed: Various flowers such as daffodils, tulips, blossom, very sharp knife/scissors (ideally a scalpel), cutting board, card, sellotape. ALLERGY WARNING.

(Related lesson: 04/03/21  KS3 Science – Flowers)


Lesson 3 (Weds 10th Mar): Making ‘plastic’ milk – Investigate the casein levels in different milks. Recording data in tables and bar charts.

Equipment needed: Three different types of animal milk, white vinegar, sieve, bowl, pan, stove, spoon, weighing scales. ALLERGY WARNING.  

(Related lesson: 08/03/21  KS3 Science – Neutralisation)


Lesson 4 (Weds 17th Mar): Electromagnets – Investigate how changing aspects of an electromagnet affects its strength. Recording data and bar charts.

Equipment: Large nails (approx 8cm) made of different metals (or just iron if you can’t find others), about 1m of thin plastic coated copper wire (from old speaker cables?), new D size batteries, small paperclips

(Related lesson: 16/03/21  KS3 Science – Power stations)


Lesson 5 (Weds 24th Mar): pH indicator – Make your own pH indicator and investigate the pH of different foods. Working safely and reading scales.

Equipment: Red cabbage, knife, kettle, pan, filter paper (eg coffee filter), large glass bowl, six small glasses, various food items eg lemons, baking soda (not food), vinegar, milk, tea, orange juice

(Related lesson: 01/03/21 KS3 Science – pH scales)


Lesson 6 (Weds 31st Mar): Germinating seeds in acid rain – Investigate the germination rate of cress seeds at different pH levels.

Equipment: Cress seeds, cotton wool, water, vinegar, shallow dishes, measuring cups (for small volumes), tea spoon

(Related lessons: KS3 Science 22/03/21 Acid Rain; 01/04/21 Grow your own)


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Your Tutor

Andy Milson BSc, PGCE

Andy is a qualified and experienced science teacher who has worked as both a secondary school teacher and a private tutor since 2009. Andy’s love of science started as a child when he used to create fact files about plants and animals. Andy is interested in all types of science from Astronomy to Zoology and likes to help his students link their learning to everyday life. Andy is a co-founder of Tutor Led Learning.

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24 March
10:00 am - 10:50 am GMT
Lesson Categories:
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Suggested age group
KS3: 10-14
Lesson dates
Wednesdays from 24/02/21 to 31/03/21