Is observation a useful tool to help teachers decide what to do next when planning lesson/activities for children?

Why are gold and platinum used for jewelry

One osha preferred method to control absestos dust during brake and cluth repair and service is the negative pressure enclosure/hepa vaccum system method

Classify each action depending on whether it will meet or fail to meet the goals of the organization. a group of students form a healthy earth club at their school. their goal is to limit their school’s impact on human-led climate change. they brainstormed a list of actions they can take to meet this goal.