INTRODUCTION This lesson has 9 parts. Follow the frog and let it guide you through the lesson. Welcome to the green world of frogs and toads!
GRADE LEVEL Intermediate: Grades 4 - 5
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READING Students will be able to read, comprehend, interpret, evaluate and use written
material.
SCIENCE CONTENT Students will understand the fundamental concepts, principles and interconnections of
the life, physical and earth/space sciences.
[ Top | Index | Need Help? | Report Broken Link ] LESSON PROBLEM What is the difference between frogs and toads?
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VOCABULARY [ Top | Index | Need Help? | Report Broken Link ]
STUDY GUIDE
Frogs and toads belong to a class of animals called amphibians. All amphibians are cold-blooded animals with backbones. During the first stage of their lives, they live in water, but during the second stage they live on land. Because frogs and toads are amphibians, they have thin, moist skins that lose water easily. Most, therefore, live in moist places. The skins of amphibians also act as breathing organs. The skins and the lungs take in oxygen and give off carbon dioxide. When the adult toad or frog is underwater, it breathes through its skin, but when it is on land it breathes with its lungs. Frogs and toads are not exactly the same. Frogs have bulging eyes, webbed feet and powerful hind legs. In fact, their hind legs are ideal for jumping great distances. Most frogs live near water. Toads are more at home on land; however, they return to the water to lay their eggs. Toads have shorter hind legs than frogs. Instead of jumping long distances like frogs, toads move in short, quick hops. Since toads cannot get away from an enemy as fast as frogs can, they have poison glands on both sides of their necks. If an animal bites a toad, the animal may get sick from the poison.
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ACTIVITY
[ Top | Index | Need Help? | Report Broken Link ] EXTENDED LEARNING Good thinkers are good observers. Good thinkers are also good at asking themselves questions about the things that they observe.
Most things around us have special properties of features that we can observe if we really look carefully. For example, they have:
Two things may at first look quite different. However, if we look a little closer, and think about what we see, the things are sure to have some properties that are the same. Comparing things in this way will help you store similar things in your brain for future use.
Write down at least three ways in which the following pairs of things are the same. Use the properties listed above to help you.
[ Top | Index | Need Help? | Report Broken Link ] Congratulations! You have successfully completed this very difficult lesson. Thanks for coming to visit. [ Top | Index | Need Help? | Report Broken Link ] |
