"Tree Planting Problem" Mathematics Wide Angle PPT (Lesson 2)

Description

"Tree Planting Problem" Mathematics Wide Angle PPT (Lesson 2)

Part One: Learning Objectives

1. Learn to use line segment diagrams to represent the situation of not planting at both ends of the tree planting problem, and cultivate students' ability to analyze problems;

2. Establish a mathematical model for tree planting problems, classify similar problems in life based on this model, and try to solve the problem by applying the relationship between the spacing and the number of trees in the model.

[Important and difficult points] Understand the rules between the number of intervals and the number of trees, and use the rules to solve problems.

PPT on tree planting issue, part 2: introduction of new knowledge

The greening team needs to plant trees on one side of the path 60m apart (planting on both ends), and the distance between two adjacent trees is 3m. How many trees should be planted in total?

60÷3+1＝21 (tree)

Answer: A total of 21 trees will be planted.

Can you help them solve this problem?

The Elephant House and Monkey Mountain are 60m apart. The greening team will plant trees on both sides of the path between the two halls (not at both ends). The distance between two adjacent trees is 3m. How many trees should be planted in total?

What do you know? How many trees do you think should be planted in total?

If both ends are not planted, what is the relationship between the number of trees planted and the number of intervals?

What patterns did you discover?

Do not plant at both ends: number of trees = number of intervals - 1

PPT on tree planting issues, part 3: classroom exercises

1. There is a 35m path in front of Xiao Ming’s house, and the greening team wants to plant a row of trees beside the road. Plant a tree every 5m (plant at one end and not plant at the other end). How many trees should be planted in total?

35÷5＝7 (tree)

Answer: A total of 7 trees need to be planted.

2. A corridor is 32m long, and a potted plant is placed every 4m (not placed at both ends). How many potted plants should be placed in total?

32÷4＝8 (pieces)

8-1=7 (pot)

Answer: A total of 7 pots of plants need to be placed.

3. A piece of wood is 10 m long and should be divided into 5 equal sections. It takes 8 minutes to saw each section. How many minutes does it take to finish sawing?

10÷5-1＝4 (times)

8×4=32 (minutes)

Answer: It will take a total of 32 minutes.

PPT on tree planting, part 4: Class summary

Classmates, what knowledge have you learned in this class?

Do not plant at both ends: number of trees = number of intervals - 1

Number of intervals = number of trees + 1

Number of trees = number of intervals + 1

Number of trees = number of intervals - 1

Number of trees = number of intervals

Keywords: Free download of fifth grade mathematics PPT courseware from the People's Education Press, tree planting problem PPT download, mathematics wide-angle PPT download, .PPT format;

For more information about the PPT courseware "Wide-angle Tree Planting Problem in Mathematics", please click the PPT tag of "Wide-angle Tree Planting Problem in Mathematics".

"Tree Planting Problem" Mathematics Wide Angle PPT Courseware (Lesson 3):

"Tree Planting Problem" Mathematics Wide-angle PPT Courseware (Lesson 3) Part One Content: Lesson Objectives 1. Be able to use a line diagram to represent tree planting problems on closed routes and develop the ability to analyze problems. 2. Be able to initially establish a mathematical model for tree planting problems, and be able to combine life...

"Tree Planting Problem" Mathematics Wide Angle PPT Courseware (Lesson 2):

"Tree Planting Problem" Mathematics Wide-angle PPT Courseware (Lesson 2) Part One Content: Lesson Objectives 1. Be able to use a line diagram to represent the tree planting problem of not planting at both ends and not planting at one end, and cultivate the ability to analyze problems. 2. Be able to initially establish a mathematical model for tree planting problems, and be able to...

"Tree Planting Problem" Mathematics Wide Angle PPT Courseware (Lesson 1):

"Tree Planting Problem" Mathematics Wide-angle PPT Courseware (Lesson 1) Part One Content: Lesson Objectives 1. Be able to use a line diagram to represent a tree planting problem with planting at both ends, and develop the ability to analyze problems. 2. Be able to initially establish a mathematical model for tree planting problems, and be able to combine life...

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Update Time: 2024-10-04

This template belongs to Mathematics courseware People's Education Press Fifth Grade Mathematics Volume 1 industry PPT template

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