A little inquiry task to arrive at the addition rule for logs. It is nice to let pupils attempt each of the tasks and then let them direct a whole class discussion. This approach allows more mathematical thinking than simply telling them the rule. A suggested next step would be to have pupils explore “why” the rule works. Encouraging pupils to consider the exponential form of the expressions is a useful starting point.
Credit: @chrismcgrane84
Starting Points Maths 