| Category | Format | Size |
|---|---|---|
| Third Grade Science Volume 2, Textbook Edition | pptx | 6 MB |
"We Saw the Roots First" Plant Growth Changes PPT
Description
"We Saw the Roots First" Plant Growth Changes PPT
Part One: Growth of Plant Roots
Exchange seed changes
Who grows first, roots, stems or leaves? Is every seed the same?
In what direction do roots grow? Is it consistent with the direction in which the seeds were placed?
Summary of seed changes
Through observation, we found
Seeds germinate first ________ and then ________;
Plant roots grow toward ________;
Root growth rate ________.
We first saw the root PPT, the second part: studying the role of roots
When we water plants, where do we usually water? Why is most of it poured onto the soil?
We try to move the plant seedlings that sprouted in the glass to the flower pot. Are the seedlings easy to take out of the cup?
What role do plant roots play in plant growth and development?
Conduct experiments to study the role of plant roots.
①Choose a plant with roots and put it into a test tube with water.
② Soak the roots of the plant in the water in the test tube.
③Drop some vegetable oil on the water surface to prevent the water in the test tube from evaporating into the air, and mark the water surface.
④Observe the changes in the amount of water in the test tube.
Summarize the functions of plant roots
The roots of plants can absorb water and minerals from the soil to meet the needs of plant growth; they can also fix the plant in the soil.
Keywords: Free download of the third-grade Chinese PPT courseware of the textbook version. We first saw the roots PPT download, the growth changes of plants PPT download, .PPT format;
For more information about the PPT courseware "The Growth Changes of Plants, We First See the Roots", please click the "The Growth Changes of Plants, We First See the Roots" ppt tag.
"Our Great Harvest" PPT download of plant growth changes:
"Our Great Harvest" PPT download on the growth and changes of plants Part 1: Introduction of new knowledge What we sowed was one seed at the beginning, but how many seeds have it turned into now? What do you know by observing the fruits of impatiens? The fruits of impatiens are oval and green (..
"Our Great Harvest" Plant Growth Changes PPT:
"Our Great Harvest" PPT on the Growth and Changes of Plants Part One: We Harvest the Seeds After several months of growth, the impatiens have bloomed and bear fruit, and flower farmers will also welcome the joy of a bumper harvest. How many seeds can be harvested from one impatiens plant? Let's make a simple...
Download the PPT "Blooming and Fruiting" Plant Growth Changes:
"Blooming, Fruiting" PPT Download of Plant Growth Changes Part One: Introduction of New Knowledge Impatiens Is there any connection between flowering and fruiting? ... ... ... PPT has blossomed and bears fruit, the second part of the content: new lesson explanation, small activities before class: observing phoenix...
File Info
Update Time: 2024-06-30
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