Plant Growth and Development

1

• Plant Growth and Development
• Table of Contents

Lesson Title Date
1 Plants KWL
2 Inside a Seed
3 Planting the Seeds
4 Thinning and Transplanting
5 How Does Your Plant Grow?

2
DateLesson 5 How Does Your Plant Grow?
(Day 5, 6, 7, or 8)
At this stage of the growing cycle
(approximately Day 5, 6, or 7possibly 8), the
plants have grown tall enough for students to
measure and record their height in centimeters on
a graph. This is an opportunity for students to
apply graphing skills to the experiences they are
having growing plants.
3
Materials List

• For each student
• Student notebook
• 1 quad of plants
• 1 sheet of centimeter graph paper (see Appendix F
  of teachers guide)
• 1 strip of paper precut to 1 centimeter wide (see
  Appendix F of teachers guide)
• 1 pair of scissors

• For the class
• 1 bag of 500 snap-together centimeter cubes
• Glue
• Crayons

4
Students complete this weekly. Same day every
week.
5
Wisconsin Fast Plants Growth Graph

• Glue the Wisconsin Fast Plants Growth Graph into
  your notebooks. (TH-7)
• Choose one plant to measure for the rest of this
  unit.
• Move your name label to that cell of your quad to
  mark the plant you have chosen.
• Write the age of the plant in the appropriate
  place and measure.

6
Measuring with paper strips

• Mark the height of the plant by drawing a line on
  the strip.
• Fill in the squares below that line.
• Double-check by holding the paper up against the
  plant again.
• Cut off the darkened squares and above the
  correct day number and glue it in place.

7
Measuring with centimeter cubes

• Fit the cubes together so you can measure your
  plant to the nearest centimeter. The bottom of
  the cube must rest upon either the potting mix or
  the rim of the quad. Always rest the cubes or
  paper strip on the same place when measuring your
  plant.

• Lay the cubes on the graph above the correct day
  number and mark the height of the column.
• Darken in the bar graph to that height.

8
In our training
Measure one plant in each quad. Week 1 Day
7 Week 2 Day 14 Week 3 Day 21
7
14
21
28
35
42
9

• Plant Growth and Development
• Table of Contents

Lesson Title Date
1 Plants KWL
2 Inside a Seed
3 Planting the Seeds
4 Thinning and Transplanting
5 How Does Your Plant Grow?
6 Observing Leaves and Flower Buds
10

• Lesson 6 Observing Leaves and Buds

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Overview

• In addition to growing in height, plants also
  develop leaves and flower buds. In this lesson,
  students will observe the first true leaves and
  the buds on their Brassica plants and record
  their observations in both words and pictures.
  These developments will take place on
  approximately Day 7, 8, or 9.

12
Observe your quad of plants with a hand lens.
Look for the following

• Differences between the seed leaves and the true
  leaves
• Number of both kinds of leaves
• Color, size, shape, and number of buds

13
Draw and label the plant in your Observation
Sheet. Your drawing should show the following

• the age of your plant in days
• the differences between the two kinds of leaves
• the buds
• the right number of leaves and buds

14
How old are the plants today?Our plants have
changed a lot since Day 1. What was the first
stage of the plants life cycle?
15
Life Cycle CardsAt about 24 hours after
planting, the embryonic root emerges.
16
After about 28 hours, the seedling emerges from
the potting mix. The seed coat is split and the
white cotyledons or seed leaves are visible.
17
During Day 2 and 3, both the root system and the
cotyledons, which are now green, continue to grow.
18
On Day 4 or 5, the first true leaves appear at
the growing tip of the plant, between the seed
leaves.
19
From Days 4 through 7, the true leaves continue
to emerge and grow at a remarkably rapid pace.
20
By Day 8 or 9, the yellow-green flower buds
appear in a tight cluster.
21
What do you think will happen to the plants
next?Write your predictions in your notebook.
22

• Plant Growth and Development
• Table of Contents

Lesson Title Date
3 Planting a Seed
4 Thinning and Transplanting
5 How Does Your Plant Grow?
6 Leaves and Flower Buds
7 Growth Spurt

23
Lesson 7 Growth Spurt (Day 9) Question What
is a growth spurt?
Students predict and measure their plants
everyday beginning Day 9 to about Day 13.
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Growth Graph
Days 9 13 are the growth spurt days and
dramatic changes happens. Record daily on Growth
Spurt Chart. After day 18 there is very little
growth in height. The plant is busy producing
buds, flowers, and seeds. Measure at least
once a week to confirm that growth has slowed or
stopped. Record this on the Growth Graph.
25

• Plant Growth and Development
• Table of Contents

Lesson Title Date
3 Planting a Seed
4 Thinning and Transplanting
5 How Does Your Plant Grow?
6 Leaves and Flower Buds
7 Growth Spurt
8 Why Are Bees Important?
26
Date Lesson 8Why are Bees
Important?

• BEES
• What We Know

• BEES
• What We Wonder

27
Make a quick drawing of a bee from memory.
28

• Plant Growth and Development
• Table of Contents

Lesson Title Date
8 Why Are Bees Important?
9 Getting a Handle on Your Bee




29
Participants Guide TH-9
Not necessary
30
The Worker Bee
31

• HONEYBEE

32
Close Up of the Honeybee
33
Make a scientific drawing in your notebook.
The Worker Bee
34
Foldable

• Smallest in size, but 90 of hives population
• Always a female
• Works herself to death- takes care of larvae,
  build and clean nest, collect nectar and pollen
• Lives 3-6 weeks

• Largest, only one in hive
• Egg Factory-can produce 1,500 eggs each day
• Lives 3-5 years

• Makes up about 10 or hives population
• Strong flier, male
• Purpose in life- to catch the queen during
  nuptial flight and fertilize her. Winner dies
• Lives 1-2 seasons (spring, summer, or both)

35
Self-Assess Fill in the sheet without your notes.
The Worker Bee