Transcript 4/20 & 4/21 - 7th Grade Agenda

11/19 & 11/20 - 7th Grade Agenda
Learning Objective: Learn about Science Fair
Project
Collect HW: Reading & Notetaking p.171-174
Video: Science Fair Project
Chap 4 Test
Textbook Reading 365 - 374
HW: Reading & Note taking p.175 – 178
Reminder HW: Science Fair Topic due 12/3 &
12/4 (10 Points)
Reflection
• Prompt: Write 2 reasons why plants are
important to us. What would happen if
there were no plants on the planet?
What is a plant?
• Autotrophs - Photosynthesis
• Cell Wall (Made of cellulose,
a chemical that makes the
walls rigid)
• Multicellular.
Origin of Plants – When did
plants first appear?
• Oldest plant: 400
million years old
• Ancient Green Algae
were ancestors of
today’s plants.
5 things that plants must do to
survive on land.
1.
2.
3.
4.
5.
Obtaining water and other materials
Retaining Water
Transporting Materials
Support
Reproduction
Living on Land – How do plants
retain water?
• Cuticle: Waxy waterproof layer
covers the leaves of most plant
and helps to retain water.
Transport and
Support – How
can plants grow
so tall?
• Vascular tissue:
Internal tube like
structures through
which water and food
move inside the plant
Classification of Plants
• Nonvascular Plant:
Grows low to the
ground
• Vascular Plant:
Grows tall
Reproduction – Do plants
produce eggs and sperms?
• In plants, Fertilization occurs when sperm
cell unite with an egg cell
• The fertilized egg is called a zygote.
Complex Life Cycle
• Sporophyte
Stage: Plant
produce spores
• Gametophyte
Stage: The plant
produce two
kinds of sex cells
or gametes
(sperm & egg
cells)
Photosynthesis
• Carbon dioxide + water sugar + oxygen
• Excess food
made by plants
are stored in the
roots, stems or
leaves
Reminder Homework for 12/4 &
12/5
 HW: Bring a large flower in a
plastic bag w/ your name on it.
that we will observe in class:
 Best to bring a Lilly
 Next best is to bring a large
flower where you can see the
pistil and stamen.
 You can go to a florist and ask
them of any old flower that
they are going to throw away
 5 Points
Science Fair Project (85 Points)
• Science Fair Topic & Hypothesis due
12/13 & 12/14
• Final Project due 2/26 & 2/27
• Need to come up with a question and
hypothesis.
• Next, you need to conduct an experiment
and publish results.
Nature of Inquiry
Posing a q________
uestions
municate
Com__________
Forming a
Hy________
pothesis
Design an
Ex________
periments
onclusions
Draw C__________
Collect and
erprete data
Int_________
Scientific Inquiry
• Scientific Inquiry
refers to the diverse
ways in which
scientists
inve_______
stigate the
natural world and
pose expl__________
anations
based on the
evidence they gather.
1st Step: Posing Questions
• Scientific Inquiry often
begins with a problem
or question about an
obse_________.
rvation
2nd Step: Hypothesis
• Hypothesis is a
possible expl_______
anations
for a set of
observation or answer
to a scientific question
3rd Step: Design an Experiment
• An experiment in which
only one var______
iable is
manipulated at a time is
called a controlled
experiment
• Why is only one variable
manipulated?
4th Step: Collecting and
Interpreting Data
• Data are the facts,
figures, and other
dence gathered
evi_______
through observations.
• It is usually a data or
a chart
5th Step: Drawing Conclusions
• A conclusion is a
summary of what you
rned from
have lea_____
an experiment.
6th Step: Communicating
• Communicating is
sharing of ideas and
experimental findings
with others through
writing and sp______.
eaking
Reflection
• Prompt: Examine the Science Fair Boards
that you see around the room and write 4
Hypothesis that you like. (write in
complete sentences)