"Packaging Box" PPT courseware

Description

"Packaging Box" PPT courseware

1. Situation introduction

What is volume?

What mathematical information do you know from the picture?

What questions can you ask based on this information?

2. Cooperation and exploration

Experiment 1 requirements

1. Prepare a glass filled with half a cup of red water and a stone tied with a rope.

2. Use a portable rope to immerse the stone in the water in the glass and observe the changes in the water level after placing the stone.

3. Talk about the results of the observation. Think about it, what does it mean?

Experiment 2 requirements

1. Prepare 2 identical cups. The first cup is filled with sand and the second cup is empty.

2. Place a wooden block into the second cup, then pour sand from the first cup into the second cup until it is full.

3. Talk about the results of the observation. Think about it, what does it mean?

What are the commonly used units of area? Guess what are the commonly used units of volume?

Commonly used area units are: square centimeters square decimeters square meters

Commonly used units of volume are: cubic centimeter cubic decimeter cubic meter

How big is 1 cubic centimeter?

A cube with an edge length of 1 cm has a volume of 1 cubic centimeter.

Which objects in life have a volume of approximately 1 cubic centimeter?

3. Independent practice

1. The figures below are all made of small cubes with an edge length of 1 cm. Let’s talk about how many cubic centimeters their volumes are.

2. Choose an appropriate unit name.

The volume of a microwave oven is approximately 40( ).

The area of ​​the textbook cover is approximately 4.4 ( ).

The volume of the container is approximately 40 ( ).

The volume of the pencil case is approximately 200 ( ).

3. Put a cube (edge ​​length 5 cm) gift box into a box (length 40 cm, width 30 cm, height 10 cm). How many boxes can be placed at most? (Material thickness is ignored)

Packed along the "length" of the box, the number of items that can be loaded in a row: 40÷5=8 (pieces)

Packed along the "width" of the box, the number of rows that can be loaded: 30÷5=6 (rows)

Along the "height" of the box, the number of layers that can be installed: 10÷5=2 (layers)

Maximum number of boxes that can be loaded: 8×6×2=96 (boxes)

Answer: It can hold up to 96 boxes.

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Update Time: 2024-09-12

This template belongs to Mathematics courseware Qingdao Edition Fifth Grade Mathematics Volume 2 industry PPT template

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