We can derive expressions and equations from sentences, and also we can derive formulae such as area and volumes, or quadratics. In this video, we're going to look at deriving formulae. You are usually given information in a diagram or sentences and asked to "show that". Ignore the "show that" as that is the final answer that we're trying to get to. Use the information given to create an equation, which then usually will need rearranging to get to the 'show that' answer. Take these questions step by step, and do not pay much attention to the "show that" information until the end. If in the question you are told the area for example, then that will be what your equation equals and you need to create an expression to find the area.
Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT.
VISIT us at www.fuseschool.org, where all of our videos are carefully organised into topics and specific orders, and to see what else we have on offer. Comment, like and share with other learners. You can both ask and answer questions, and teachers will get back to you.
These videos can be used in a flipped classroom model or as a revision aid.
Twitter: https://twitter.com/fuseSchool
Access a deeper Learning Experience in the FuseSchool platform and app: www.fuseschool.org
This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed: http://creativecommons.org/licenses/by-nc/4.0/ ). You are allowed to download the video for nonprofit, educational use. If you would like to modify the video, please contact us: info@fuseschool.org
Click here to see more videos: https://alugha.com/FuseSchool
Transcript: alugha

In algebra, we replace a letter with numbers in the process known as substitution. Given the formula A = 1/2bh, if the base is 5cm and the height is 10cm, then the area is ½ X 5 X 10 because we have replaced the b with 5 and the h with 10. You just need to be be careful with negative numbers: it is

To find the equation of a straight line from a graph, you first need to find the gradient and then secondly find the y-intercept.
The equation of a straight line is y=mx+c, where m is the gradient and c is the y-intercept.
VISIT us at www.fuseschool.org, where all of our videos are carefully org

Continue learning about balancing equations, as a part of chemical calculations.
The law of conservation of mass states that no atoms are lost or made during a chemical reaction. There are different ways of arranging the atoms. Chemical reactions are about rearranging atoms.
Chemical reactions ca