mj s2鲜花水果1两个青皮或大芸豆一个泡水晚上另不2准备2朵

ScienceLesson

2FlowersandFruitsGoals

for

TodayStudents

carefully

observe

seeds.Students

describe

how

flowers

make

seeds.Students

observe

and

compare

different

kinds

of

seeds.Students

describe

how

animals

help

plants

reproduce.Students

identify

what

seeds

need

to

grow.Plan

ahead

before

class

time：Preparing

some

lima

beans,

soak

half

of

the

limabeans

in

water

overnight.

Ask

each

child

to

prepare

atleast

one

dry

bean

and

one

wet

bean

before

the

classtime.let

every

child

prepare

a

flower

(such

as

a

peachblossom

,

lily,

azalea)

which

has

a

stamen

and

pistil.let

every

child

prepare

seeds

that

are

edible.

Theseinclude

beans,

peas,

sunflower

seeds…..两个青皮豆或大的芸豆，一个泡水一晚上，另一个不泡水。准备1-2朵花，能看得清雄蕊和雌蕊的花（如杜鹃花，桃花，梨花，蔷薇花）。可食用的种子，收集3-4种，如葵花子，南瓜子，豌豆。How

do

plants

grow

and

change?How

do

plants

make

seeds?How

would

you

describe

seeds? What

needs

to

happen

for

seeds

tostart to

grow? From

what

part

of

this

plant

will

thenew

plants

come? How

do

you

think

the

plant

makebeans?Flowers

and

FruitsRead

the

textbook,

page

34What

are

the

parts

of

aseed?(see

textbook,

page

35

)Please

use

the

hand

lens

to

examinea

lima

bean

if

you

have

one

available.Compare

the

outside

of

the

wet

seedand

the

dry

seed.

What

do

you

thinkthis

part

of

the

seed

does?A

flower

goes

through

stages

of

growth

to

make

a

fruit.

Thestages

include

a

flower,

a

full

grown

fruit,

a

bee

in

the

flower,an

immature

fruit,

a

flower

with

wilted

petals,

an

immaturefruit,

and

finally

it

becomes

a

mature

fruit.How

do

flowers

make

seeds?PomegranateFlower

PowerApples

All

AroundStamen:

The

stamen

is

the

part

of

aflower

that

produces

pollen.Pistil:

A

pistil

is

the

part

of

a

flowerthat

receives

pollen

and

makes

seeds.How

do

flowers

make

seeds?VocabularyPollen:

Pollen

is

the

stickysubstance

inside

flowers.

Ithelpsmake

seeds.Seed

Coats:

A

seed

coat

is

acover

thatkeepsa

seedsafe

andprevents

it

from

drying

out.How

do

flowers

make

seeds?Vocabulary(Read

textbook,

page

36

)What

do

flowers

look

like?(petals

,

different

colors……)How

does

pollen

move

to

differentflowers?(Animals,

water……)What

parts

of

the

flower

canyou

see?Where

are

the

seeds

of

thecantaloupe

located?

Can

youfind

them?How

do

flowers

make

seeds?Why

do

flowers

needpollen?What

happens

whenripe

fruit

falls

to

theground?Read

page

37

in

yourtextbook.How

do

flowers

make

seeds?Flowering

is

the

reproductive

method

of

manyplants.

Fruits

contain

and

helps

disperse

theseeds

in

order

for

new

plants

to

grow.How

do

flowers

make

seeds?PerfectflowersScientists

divide

flowers

intotwo

types:

perfect

flowers,which

contain

both

femaleand

male

parts,

and

imperfectflowers,

which

contain

onlythe

male

or

female

part.ImperfectflowersHowdo

seeds

look?(Read

textbook,

page

38

)What

do

seeds

look

like?（big;small;

hard;

brown;

green

)What

do

seeds

do?What

are

the

parts

of

a

seed?(embryo

or

tiny

plant;

food

orcotyledon;

seed

coat) Why

do

you

think

the

star

aniseflower

is

the

same

shape

as

the

pod?Pictures

of

seeds

that

are

edible.

These

include

beans,

peas,sunflower

seeds,

pumpkin

seeds,

and

corn.

You

can

tastethese

seeds.

Please

show

more

seeds

that

are

edible.(students

prepare

some

edible

seeds

before

class.)Howdo

seeds

look?(Read

textbook,

page

39

)Howdo

seeds

look?How

is

the

peanut

like

a

lima

bean?(They

both

have

seed

coats,food)How

are

they

different?(One

has

a

hard

seed

coat

andsoft

outer

bean

pod;

the

other

hasa

soft

seed

coat

and

a

hard

outershell.)seed

coat:

protects

the

seed;embryo:

grows

into

a

new

plant.HowDo

Seeds

Move?(Read

textbook,

pages

40-41

)What

have

you

learned?Review

what

we

learned

about

how

plants

make

newplants.

Please

add

this

information

to

the

chart.Stamen

makes……Pistil

turns

into……Seeds

get

movedto

……We

are

going

to

read

a

paragraph

about

a

dandelion.

Whatmight

the

paragraph

say

about

how

dandelions

use

wind

tomove

their

seeds?(Read

textbook,

page

42

)Writing

about

Science(Read

textbook,

page

43

)How

many

seeds?How

many

seeds

does

eachfruit

have?Avocados,

peaches,

plumshave

seed;Peanuts

have

seeds;(3

)

Grapes

have

seeds;Appleshave

seeds;Berries

have

seeds.……Can

you

think

m