The following 100 critical thinking questions are categorized under specific areas of study. 7. Critical Thinking Worksheets. These multiplying decimals worksheets are a great differentiated activity for KS2 students to help them practise multiplying decimals by one and two-digit numbers. and physical," he said, "instead of using it as a work sheet exercise, Middle school, also known as KS2, is a ripe age for team building activities and games, in that kids can benefit at a rapid pace, because they are experiencing critical thinking for the first time.