What should I pay attention to when observing constellations with a stargazing box?

What should I pay attention to when observing constellations with a stargazing box? Subject: Making Stargazing Box Teaching Objective: 1. By making a stargazing box, students' brain and hands-on ability can be cultivated and their practical operation ability can be improved. 2. Cultivate students' initial scientific consciousness and improve their interest in exploring scientific mysteries. 3. Infiltration observation attitude and method education. Teaching emphasis: the making method of stargazing box. Teaching difficulties: how to paste the string evenly (try to form a square grid). Preparation of teaching AIDS: boxes of appropriate size, scissors, transparent tape, ropes of appropriate thickness, etc. Teaching process: First, create a situation to stimulate interest (guide) students, sunny night, vast space, stars, constellation charming. Do you know which stars and constellations are in the night sky? Then, you want to know more stars or constellations, and know exactly whether their positions in the sky have changed. If so, how do they move? (Student: I think) Then we need a special observation tool, called (written on the blackboard) Stargazing Box (showing the finished Stargazing Box). In this lesson, we will learn to make a simple stargazing tool-stargazing box. Second, show the model to guide the understanding of the stargazing box. 1, the teacher will show the "stargazing box" made before class to each group. 2. Ask students to ask questions about "Stargazing Box". (For example, why should it not be covered? Can you drill a hole in a piece of cardboard to make a stargazing box? Why is the mesh string stuck on the stargazing box? (3) The composition of "Stargazing Box". Teacher: Through observation, what parts do you find in a simple stargazing box? (A grid made of an open paper box, a stargazing hole and a string) Third, discuss the making method of the stargazing box in groups. 1. Group discussion: What materials should be prepared to make a stargazing box? What are the steps? Pay attention to what? 2. Take some students to answer the questions discussed.