Observe Observe students' work with their calculators. Collect Ask students to form small groups to complete worksheets requiring them to practise working with radicals. Stress the importance of developing the understanding of each group member. Following the group activity, have students work individually to complete a quiz. Review students summaries of the guest speaker's visit for evidence of understanding of how number operations were applied in the speaker's work.
Students can use the formulae to solve problems.
Check students' examples for accuracy, relevance, and correct application of the formulae. Ask students to work in small groups to solve problems given by the teacher. Have students do the problems individually using their calculators, then compare calculator displays and attempt to resolve any differences in the answers. Check to see that each member of the group is able to get the right answer. See Appendix B for a complete list.