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"The Choice of Earthworms" Biology and Environment PPT Courseware 3
teaching objectives
1. Experience the experimental design and discussion of what kind of environment earthworms choose to live in.
2. Observe the demonstration experiment of what kind of environment earthworms choose to live in, and explain it.
3. Can explain the certain environmental conditions required for animal life.
Earthworms and the environment
Discuss in groups and design our experiment:
Do earthworms prefer dark environments or bright environments?
Do earthworms prefer humid or dry environments?
Experimental design one
Our research question: Do earthworms like to live in a bright or dark environment?
Our guess: I think earthworms like to live in dark environments
Experiment preparation (materials): long box, earthworms, lights
Experimental method: Place the earthworms in the middle of a long box, let one end of the box be illuminated and the other end remain dark. After a few minutes, open the box and see which end the earthworms have gone to. Repeat several times.
Experimental design two
Our research question: Do earthworms like to live in humid or dry environments?
Our guess: I think earthworms like to live in humid environments.
Experiment preparation (materials): earthworms, strip box, water, soil
Experimental method: Put the earthworms in the middle of a long box, let one end of the box dry and the other end stay moist. After a few minutes, open the box and see which end the earthworms went to. Repeat several times.
summary
Like earthworms, various animals like to live in certain environments, and different animals have different needs for the environment.
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For more information about the PPT courseware "The Selection of Earthworms in Biology and Environment", please click the Selection of Earthworms ppt ppt tab in Biology and Environment.
"The Choice of Earthworms" Biology and Environment PPT Download:
"The Choice of Earthworms" Biology and Environment PPT Download Part One: Exciting Introduction Where are earthworms easy to find? What is a suitable living environment for earthworms? How to design experiments to prove our conjecture? ... ... ... The choice of earthworms PPT..
"The Choice of Earthworms" Biology and Environment PPT:
"The Choice of Earthworms" Biology and Environment PPT Part 1: Earthworms and the Environment Where are earthworms easy to find? What is a suitable living environment for earthworms? How to design an experiment to prove it? What conditions can only be changed in an experiment? What conditions will not be changed?
"The Choice of Earthworms" Biology and Environment PPT Courseware 5:
"The Choice of Earthworms" Biology and Environment PPT Courseware 5 Earthworms in Science Earthworms are the general name for animals in the class Oligochaeta of the phylum Annelida. In scientific classification, they belong to the order Lumbriforme. The body is symmetrical on both sides and segmented; it has no bones and is covered with a layer of...