The Montessori class knows China's teaching plan.

1, through hands-on operation, stimulate the interest in learning graphics.

2. Observe and compare regular pentagons, regular octagons and regular decagons, and perceive their main features.

3. Have the ability to observe and distinguish.

Second, the activity preparation

1, teaching aid preparation: wall chart "Beautiful Windows"

2. Preparation of learning tools: "polygonal" colored beads and colored pens. Cut the colored paper into pentagonal to decagonal cards (for umbrella cover). Regular pentagon, regular hexagon, regular octagon and regular decagon patterns.

3. Operation Manual P45——46 pages

Third, the activity process

1. Create a scene: the small animals' houses have been decorated, but they only have windows down and are not painted. Let's help them.

2. Show the wall chart and guide the children to observe. Look at the window marks of the small animal house. Muscle tubes. Can it be the same as snow grinding? What shapes are they?

3. Paint each window with a different color. They are regular pentagons, regular hexagons, regular octagons and regular decagons.

4. Discuss and talk about what polygonal objects you have seen in your life activities, such as a table with a regular hexagon in the hive and an octagonal umbrella.

5. Operational activities.

Children hold the learning tool "polygon", touch the polygon and perceive its basic characteristics. Map it to a polygon card to deepen the understanding of polygons.