Teacher’s Instruction Biogeochemical Cycles Foldable - APES
Teacher¡¯s Instruction
Biogeochemical
Cycles
Foldable
Page
1
This graphic organizer is used to demonstrate
cycles showing the movement of a particular
chemical through the biological and geological
parts of an ecosystem.
Science Safari
Science Safari
Teacher¡¯s Instruction
Objectives
1. The student will be able to label diagrams to understand the water cycle, oxygen cycle, carbon cycle,
nitrogen cycle, and phosphorus cycle.
2. The student will incorporate the process of photosynthesis and respiration into the steps of the
cycles.
3. The student will understand the chemical changes that take place within the cycle.
Materials
Copied sheets from this resource ¨C pages 5-10 for the student
Scissors
Directions
1. Copy sheet page 5 and then copy page 6 on the back of page 5 upside
down; copy sheet page 7 and then copy page 8 on the back of page 7 upside
down; copy sheet page 9 and then copy page 10 on the back of page 9
upside down.
Answer key: copy sheet page 11 and then copy page 12 on the back of page
11 upside down; copy sheet 13 and then copy page 14 on the back of page
13 upside down; copy sheet 15 and then copy page 16 on the back of page
15 upside down.
2. Each sheet will be folded as a hamburger fold. Page 5 will be on the
outside with page 6 on the inside; page 7 will be on the outside with page 8
on the inside; page 10 will be on the outside with page 9 on the inside.
Answer key: page 11 will be on the outside with page 12 on the inside; page
13 will be on the outside while page 14 will be on the inside; page 16 will be
on the outside with page 15 on the inside.
Page
2
3. Mark the outside fold one inch (about 3 cm) from the outer edges on all
sheets.
Science Safari
Teacher¡¯s Instruction
4. Keeping the sheet folded, take page 5 and cut the outer edges to the
marked spot on both sides. You are cutting off the fold (maybe about 2
mm). Caution students not to take too much off or they will cut into the
information.
The sheet is open so that you can see how much was cut off.
5. On the other two sheets, keeping them folded as well, start at one of
the marked spots and cut the fold between the two marks. Again, you are
just cutting off the fold (maybe about 2mm). Make sure students don¡¯t cut
too much and cut into the information.
These sheets are open so that you can see how much was cut off. The
outside inch is left on both sides.
Page
3
6. Lay the two folded sheets out flat from #5. Place the oxygen cycle sheet
on the bottom and the carbon cycle sheet on top of it.
Science Safari
Teacher¡¯s Instruction
7. Fold the sheet from #4 into a burrito fold.
8. Place the burrito through the cut in the other two sheets.
9. Open the burrito.
Inserted page is now flat.
Page
4
10. Fold the sheets in half and it will form a book.
This book can be used as a note taking tool, as an assignment, as a study guide. Answer key is provided
on pages 11-16 and can be put together following the same instructions (I have given the directions in
red for steps 1 and 2 to put the pages together correctly).
Science Safari
Student Activity
Nitrogen Cycle
Use the following terms to fill in the blanks to the questions below.
atmosphere
78%
ammonia
proteins
denitrificating
nitrate
nitrogen-fixing
plants
animals
waste
plants
1. Our atmosphere is ___________ nitrogen gas.
2. Animals and plants cannot directly use all the nitrogen found in our _________________________.
3. Only special bacteria can directly use nitrogen in our atmosphere and ¡°fix¡± it so other organisms can
benefit. These bacteria are called _______________________________ bacteria.
4. Higher organisms use nitrogen to make their ______________________.
5. Animal waste decay by the action of bacteria which create ______________________ and
___________________ products rich in nitrogen, and useful for plants to use again.
6. _________________________ bacteria in the soil can break down the ammonia into the gaseous
form of nitrogen, which is not available for use by plants or animals.
7. In another part of the cycle, animals eat _________________________ containing nitrogen, which is
again returned to the soil by animal ______________________ or decaying _____________________
and ___________________________.
8. Label the diagram of the NITROGEN
CYCLE.
Cycles through the
Ecosystem
Define biogeochemical cycle:
Page
5
The elements important to life that are
recycled are:
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