A new teacher led lesson resource, designed to be delivered as either as part of your curriculum, or as an extension to our own Wind turbines workshop, this activity is an introduction to Ohm’s Law. Firstly, pupils learn about voltage, current and resistance and how they interact in electrical circuits, before putting those elements together to understand the importance of Ohm’s Law. After deriving the formula using their knowledge of current, resistance and voltage, they then apply what they’ve learned on the accompanying worksheet. Finally, they have to get creative and produce their own analogy or way to explain Ohm’s Law to their friends!

This resource is suitable for Years 8 – 10.




This 'Ohm's Law Extension Activities ' workshop meets the progression steps for the curriculum for Wales 2022 in the following areas:


Areas of Learning and Experience


Science and Technology Area of Learning and Experience.

Progression Step Statement


Being curious and searching for answers is essential to understanding and predicting phenomena.

Progression Steps


I can suggest conclusions as a result of carrying out my inquiries.

Forces and energy provide a foundation for understanding our universe.

I can explore how the motion of objects can be affected by applying specific forces.



Mathematics and Numeracy Area of Learning and Experience.

The number system is used to represent and compare relationships between numbers and quantities.

I can demonstrate my understanding that non- integer quantities can be represented using fractions (including fractions greater than 1), decimals and percentages. I can use my knowledge of equivalence to compare the size of simple fractions, decimals and percentages and I can convert between representations.

I can demonstrate my understanding that a fraction can be used as an operator or to represent division. I can understand the inverse relation between the denominator of a fraction and its value.

I have extended my understanding of multiplicative reasoning to include the concept and application of ratio, proportion and scale.

Algebra uses symbol systems to express the structure of mathematical relationships.

I can demonstrate an understanding of the idea of input, application of a rule (including inverse operations) and output, using a function machine or other appropriate methods, and I have applied this idea to solve problems.

I can model problems, using expressions and equations involving symbols or words to represent unknown values, adopting the conventions of algebra. I can use inverse operations to find unknown values in simple equations.

I can manipulate algebraic expressions fluently by simplifying, expanding, substituting and factorising by extracting a common factor.