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Science - 5th Grade
Standard 1 Objective 2
Science - 5th Grade
Standard 1 Objective 3
Students will create a simulation of the chemical reactions that occur during the digestive process.
Each group of students need:
If the Invitation to Learn is used you will also need:
A physical change occurs when the appearance of matter changes, but the composition of the matter does not change. Changes in size, shape, odor, hardness, and in many cases, phase changes caused by an increase or decrease in temperature are considered physical changes. A chemical change occurs when new kinds of matter are formed. The composition of the matter changes and new kinds of matter have different properties from the old matter. Evidence of a chemical change may include production or use of energy such as heat being given off or absorbed, light given off, the new production of a gas or solid, or a change of color. If the composition of the matter changes chemically during a phase change, it is a chemical change (e.g., a raw egg is changed to a hard-boiled egg). These evidences are called indicators.
Physical and chemical changes occur many times in daily life. As part of this activity students will gain experience with a simulation of a chemical reaction in the stomach. Students will identify and come to understand many of the physical changes and chemical reactions that exist in daily life.
The red cabbage juice used in this activity can easily be made at home in the kitchen. Take four or five leaves of a red cabbage and boil them in a cup of water. Drain off the juice. The cabbage juice will stay good and usable for about two or three days.
The investigation in this activity works best when completed in cooperative groups of three to five students. However, the lesson plan can be adapted and presented as a teacher demonstration for whole class instruction.
1-Use science process and thinking skills.
2-Manifest scientific attitudes and interests.
3-Understand science concepts and principles.
4-Communicate effectively using science language and reasoning.
5-Demonstrate awareness of social and historical aspects of science.
Invitation to Learn: Wooly Wonder and the Scientific Methods
The simulation activity may be organized as a teacher demonstration instead of an individual group activity if desired.
This lesson is part of the Fifth Grade Science Teacher Resource Book (TRB3) http://www.usoe.org/curr/science/core/5th/TRB5/. The TRB3 is designed to be your textbook in teaching science curriculum to your students. This book covers all the objectives of each standard and benchmark. If taught efficiently, a student should do well on the End-of-Level (CRT) tests. The TRB3 is designed for teachers who know very little about science, as well as for teachers who have a broad understanding of science.