Class 3 — Series, matrices, and secret codes.

Find the rule in a number sequence and predict what comes next.

Look at a 2x2 grid of shapes and find the missing piece that fits both the row and column rule.

Crack a simple letter-number code and apply the same rule to decode new words.

Find the relationship between a pair of words, then apply the same link to a new pair.

Spot how a figure rotates, flips, or grows from one step to the next and predict the next figure.

Find the missing number in a grid where every row and column follows a rule.