Understanding the polygon large class math teaching plan 1 1. Activity objectives
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 of the little animal's house. Are they the same? 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.
6. Homework:
(1), draw the sum of the sides, write the numbers in the middle of the numbers, and then connect the same numbers together.
(2) The little bee got lost. Let's help it find it! Look carefully at the flower beds in the garden and count how many polygons they have. Go from pentagon to decagon flower bed in turn. Cannot be repeated in the middle. Please draw a line.
7. Job evaluation.
Fourth, the end of the activity
1, evaluation
2. Summary
Understand the activity goal of polygon large class mathematics teaching plan 2;
1, stimulate children's interest in learning graphics through hands-on operation.
2. Observe and compare regular pentagons, regular octagons and regular decagons, and perceive their main features.
3. Willing to explore, communicate and share.
4. Promote the coordinated development of children's innovative thinking and movements.
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.
Activity flow:
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 of the little animal's house. Are they the same? 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.
6. Homework:
(1), draw the sum of the sides, write the numbers in the middle of the numbers, and then connect the same numbers together.
(2) The little bee got lost. Let's help it find it! Look carefully at the flower beds in the garden and count how many polygons they have. Go from pentagon to decagon flower bed in turn. Cannot be repeated in the middle. Please draw a line.
7. Job evaluation.
Activity reflection:
Through this activity, children have a clear concept of graphics and an impression of different graphics. Can compare the similarities and differences between the two, and will not regard the square and rectangle as the same figure. Guide children to observe objects in the environment and find the application of graphics in life, thus increasing their interest in learning.