Biology/Chemistry
Imara Abdullah |
Douglas
Academy |
3200 South
Calumet |
|
CHICAGO IL
60619 |
|
|
(773) 534-9263 |
|
|
Objective(s):
This
lesson is designed to teach second grade students that seeds come in
different
sizes, shapes and forms. The students
will be able to identify the parts of a seed and their functions in
germination.
Materials:
Fresh
fruits and
Lima,
garbanzo,
dry pinto
beans
seeds soaked in
Vegetables,
handy
black, pinto,
wet pinto beans
water over night
wipes,
paper
kidney
beans
that have soaked
hand lens
Towels,
Baggies,
black-eyed
peas
in water
over
magnifying
glass
Construction
paper
small stuffed animal night,
centimeter
paper
Scotch
tape
balance
scale
ruler, gram
and
Popsicle
sticks
graph paper
ounce scale
Strategy:
Give
student’s pre-cut fruits and vegetables. Ask students to remove the
seeds of
the fruits and vegetables. Use Popsicle
sticks to help remove and gather seeds. Put outer portions of fruits
and
vegetables in Baggies. (Save for compost). Tape the seeds to
construction paper
labeling the seeds by name. Discuss different sizes, and forms of seeds
from
fruits and vegetables.
Mix Lima, garbanzo, black, pinto, kidney beans and black-eyed peas together. Give student a portion of the mixture. Ask students to sort the beans noticing their sizes, shapes and colors. Pass around a small stuffed animal. Ask students to guess how many lima beans would weight the same amount as the stuffed animal. Record their estimate for lima beans. Do the same (ask how many beans would weigh the same as the stuffed animal) for all of the beans and record their estimates. Use balance scale to determine the number of beans of each variety that equal the weight of the stuffed animal.
Record
the actual amounts and make a graph with data.
Give
students dry pinto beans and pinto beans that have been soaked over
night. Ask
students to weigh and measure dry and wet beans. Compare
size and shape of wet and dry beans.
Give
students pinto beans that have been soaked over night. Ask students to
remove
seed coat and open the seed. Use hand lens or magnifying glass to
identify the
little plant (embryo) inside of the seed.
Discuss the parts of a seed and their function. Draw and label
the seed
and its parts including seed coat, food storage, little plant (embryo).
Performance
Assessment:
Rate
performance on a scale of one to four according to level of
participation
(rubric).
Level
one -- inattention. Student was off task.
Student cannot answer questions about seeds.
Level two -- attention. Student stayed on task. Students can answer “key” questions:” Do all seeds look alike? What are the parts of a seed? How are the parts used when the seed sprouts (germinates)?
Level three -- good attention. The student stayed on task and asks questions about the activities and topic. The student can answer “key” questions.
Level four -- excellent attention. They student stayed on task and asked questions and suggested other activities and ideas about seeds. The student can answer key questions and give statement describing the sequence of a seed sprouting (germinating).
Conclusions:
In activity one, the students removed seeds from a variety of fresh fruits and vegetables and taped those seeds to construction paper. The students discussed different sizes, forms and colors of seeds.
In activity two the students sorted different kinds of bean seeds and compared their weights to a stuffed animal. In activity three the students compared, weighed and measured wet and dry pinto beans. In activity four the students observed the parts of seed using a hand lens and named the part of a seed discussing the sequence of sprouting (germination) and the function of the parts in sprouting.
References: