HOTS done right

An effective Higher Order Thinking Skills (HOTS) marking scheme should have multiple correct answers, interpretations or options, says secondary school standard-based curriculum (KSSM) science textbook author Tho Lai Hoong (pic).

Citing an example, he said there are at least five ways to measure the rate of carbon dioxide production from the action of yeast in sugar solutions at different temperatures. Hence, there can be different answers when a student is asked to measure the rate of carbon dioxide production, he explained.