Presentation of leaf fall and its meaning. Multimedia presentation “Leaf fall will spin in autumn” presentation for a lesson on the world around (younger group) on the topic
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Research topic: How the leaf fall occurs Pupils of the 2 "B" class of the MOU Lyceum No. 8 Head Konova A.N.slide 2
Our assumption “If the trees do not shed their leaves in autumn, then they will be warmer in winter”
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What we want to find out Why does a leaf easily fall off a branch in autumn Why do trees shed their leaves Which trees shed their leaves first What determines the brightness autumn leaves
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Questions to look for answers: How is the preparation for leaf fall Which tree leaves turn yellow first
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Our action plan We will discuss the topic in class We will divide into groups We will make observations We will investigate We will present the prepared material to classmates
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What have we learned Amazing transformations occur in the leaves In autumn, the green grains of chlorophyll are destroyed, and the yellow pigment is preserved. Leaves turn yellow. The leaves become not only yellow, but also red, crimson, purple. It depends on what coloring matter is in the withering leaf. Leaves fall green from alder and lilac. In their leaves, except for chlorophyll, there are no other coloring substances.
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What did we learn Trees have their own "internal" clock In August, birch and linden leaves began to turn yellow. In September, maple leaves turn yellow, rowan leaves turn red, and at the end of the month, aspen leaves turn bright red. In ash and hazel, the leaves on the upper ends of the branches fall first. In linden and poplar, the leaves on the main part of the branches fall first.
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What did we learn The brightness of autumn leaves depends on the weather If the autumn is long, rainy - the color of the leaves from excess water and lack of light will be dull, inexpressive. If cold nights alternate with clear ones sunny days, then the color of the leaves will be juicy, bright.
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What did we learn? Why do the leaves on the tree not turn yellow all at once in autumn? Because they grew at different times and turn yellow in the same order Top leaves retain more nutrients and stay green longer Top leaves get more sunlight so they turn yellow later
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Our conclusions The leaf is attached to the branch with the help of a petiole. In summer, the petiole is strong and securely holds the leaf. In autumn, a separating layer forms at the base of the petiole. Now the petiole is weakened, and the flowing wind easily tears it off the branch along with the leaf. Falling leaves help the trees adapt to the winter drought. Deciduous trees left in the foliage for the winter would die from lack of moisture. In winter, little water enters the plant, and the leaves would continue to evaporate it. Also, during the summer, harmful substances accumulate in the leaves of trees. In autumn, these substances are removed from the tree along with fallen leaves.
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Information Resources A.A. Pleshakov "The World Around Us"; M. Enlightenment, 2007 L.F. Klimanov "Native speech"; M. Enlightenment, 2007 G.Graubin “Why is the fall of leaves in autumn?” M.: "Baby" 1987 " Primary School. Schoolchildren's handbook "M. :"Word" 1997 M.A. Gusakova "Application" M .: ”Enlightenment”, 1987
1.I am an authority……………….
2. According to the method of attachment, I happen………………. and ……………………. .
3. Petiole leaf consists of…………and………., sessile only of……….
4. A simple leaf is when on the petiole ....... sheet plate. A difficult sheet is when……………. sheet plates.
5. Leaves have 3 types of venation ………………, ………………,………………
6. Special green leaf substance……….
7……………- education organic matter exposed to light with chlorophyll.
1.I am an authority plants .
2. According to the method of attachment, I happen petiolate and sedentary .
3. Petiole leaf consists of petiole and leaf plates , sedentary only out sheet plate
4. A simple leaf is when on the petiole one sheet plate. A complex sheet is when several sheet plates.
5. Leaves have 3 types of venation mesh , parallel , arc .
6. Special green leaf substance chlorophyll .
7. Photosynthesis - the formation of organic substances in the light with the help of chlorophyll.
circled over me
Rain of mischievous leaves.
How good is he!
Where else can you find such
Without end and without beginning?
I began to dance under him,
We danced like friends
Rain of leaves and me.
LEAF FALL
What two words are found in this word?
SHEET
FALL
Not a good tree
leaf drops.
Fizminutka
AT summer garden leaf fall. Leaves rustle in the garden. Leaves bathe in the Swan's groove. Janitors clean the lawns from the leaves. Sad statues in quiet alleys. In the quiet alleys in autumn blows.
1 Chlorophyll is destroyed in the leaves.
2 The sheet changes color.
3 The leaf accumulates unnecessary substances.
4 A cork layer forms between the leaf and stem.
5 The sheet turns brown.
6 The sheet is torn off.
7 The leaf falls.
- Fast friendly leaf fall - to a harsh winter.
- Oak began to shed its leaves - to a cold snap.
- If birch leaves turn yellow from the top in autumn, then the next spring will be early, and if from below, then late.
- Aspen leaves lie face up on the ground - the winter will be cold, upside down - warm.
- Before the time the leaf falls - to a long winter.
- Until the leaf from the cherry trees has fallen, no matter how much snow falls, the thaw will drive it away.
EXERCISE "ARTIST"
It is good to sit under the autumn birch.
Draw the birch leaves.
cinquain
- On the first line - one word noun.
This is the theme of cinquain - leaf fall.
- On the second line - two adjectives.
- On the third line - three verbs.
- On the fourth line - a sentence with the help of which one expresses one's attitude to the topic. It can be a catch phrase, a quote.
- Last line is a summary word.
Leaf fall.
Beautiful, protective.
Breaks, spins, falls,
The plant is getting ready for winter.
1 out of 10
Presentation on the topic:
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SUMMARY OF AN OPEN LESSON For children younger age PURPOSE: to develop monologue speech, logical thinking. TASKS: - to create in the memory of children the most joyful impressions from the first yellow leaf; to consolidate the knowledge of children about why a leaf on a tree turns yellow and how this happens. VOCABULARY ACTIVATION: chlorophyll, crimson, stomata. MATERIAL: a picture of an autumn forest, autumn leaves, a microscope, wax crayons, colored pencils, paints, a sheet of paper. PRELIMINARY WORK: observation of trees on the site, excursion to the park, reading literature, memorizing poetry, looking at illustrations.
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Today, the guys in the lesson we will solve many mysteries of nature. How do trees prepare for winter? Why do the leaves on the trees turn yellow? And why do trees shed their leaves? Now listen to the very first riddle. What season is it talking about? Today, the guys in the lesson we will solve many mysteries of nature. How do trees prepare for winter? Why do the leaves on the trees turn yellow? And why do trees shed their leaves? Now listen to the very first riddle. What season is it talking about? "The fields are empty, the earth is getting wet, The day is waning, when does it happen?" Children: In autumn. Educator: Right. And what happens in autumn with nature. Children: empty fields; dried grass; the day becomes shorter and the nights longer; it rains often; the leaves on the trees are turning yellow. Educator: Right. And tell the guys, the name of which trees do you know? Children: poplar; maple; Birch; bird cherry; Linden; Rowan; pine; spruce, etc. Educator: Well done guys. But there are many more different trees, the name of which you will learn when you are in school. Children, why do we need trees? Children: - this is a house for birds; Wood gives us oxygen and absorbs carbon dioxide. - they save us in extreme heat; - they protect us from strong winds; - furniture is made of wood, houses are built, paper is made. Educator: Okay kids. And what kind of furniture is made of wood in our group? Children: - tables; - chairs; - beds; - picture frames; - frames for windows; - cubes. Educator: Right. Guys, do you know that the trees want to rest, because they did a good job in the summer. And they prepare for rest in advance, starting to shed leaves from themselves. Not immediately, not suddenly, they are released from the leaves. Getting ready for fall. Amazing transformations take place in the leaves. First things first, the leaves begin to turn yellow. Although no one adds yellow paint to the juices. Yellow paint is always in the leaves. Only in summer the yellow color is invisible. It is clogged with a stronger one - green. Green color Chlorophyll gives leaves a special substance. Chlorophyll in a living leaf is constantly destroyed and re-formed. But it only happens in the light. Children, let's look at dried leaves with you: green and yellow, what do you see? Children: the leaves are the same in pattern, but different in color, they have veins. Educator: But in autumn the leaves become not only yellow, but also red, crimson, purple. It depends on which dye
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is in a withered leaf. But how does it happen? In summer the sun shines for a long time. Chlorophyll is destroyed and immediately restored. The formation of chlorophyll does not lag behind its destruction. The leaf stays green all the time. With the onset of autumn, the nights lengthen. Plants receive less light. Chlorophyll is destroyed during the day, but does not have time to recover. The green color in the foliage decreases, and yellow becomes noticeable: the leaf turns yellow. Autumn forest rich in colors! The brightness of autumn leaves depends on what the weather is like. If the autumn is long, rainy - the color of the foliage from excess water and lack of light will be dull and inexpressive. And if the nights alternate with clear sunny days, then the colors will match the weather - juicy, bright. Educator: Guys, do the trees all stand with yellowed foliage at once? Children: No. Their leaves turn yellow gradually. Educator: Right. But on the very first birch (strands) of yellow leaves appear, linden does not lag behind it. But in September, the leaves of the mountain ash turn red, and at the end of September they put on a yellow and bright red aspen outfit. Indeed, trees, like all living things, have their own internal "clock". These "living clocks" sensitively feel the change of day and night. Although our trees live for tens, often hundreds of years, their leaves "work" for only one season. And during this time, they still wear out quickly. Through a microscope, you can see that the leaf is covered with a transparent skin, which is dotted with small holes - stomata. Under the influence of ambient temperature and air humidity, they either open or close. Like windows in houses. The water that is sucked up from the soil by the root rises along the trunk to the branches and leaves. When the stomata are open, moisture evaporates from the leaves, and new portions of water are pulled up through the trunk into the crown. The sun heats the leaves, and the evaporation cools them down, preventing them from overheating. Educator: Guys, put a piece of paper on your cheek. What do you feel? Children: He is cold. He is cold. Educator: What happens to a leaf if it is plucked from a tree? Children: The leaf dries quickly. Educator: And if he remains hanging on a tree? Children: It will be alive, green, fresh. Educator: Yes, guys, the leaves on the tree are juicy, fresh, the cells of a living leaf are always filled with water. Why do trees need leaf fall? Children: So that the tree rests, sleeps, prepares for winter. Educator: And trees also need leaf fall for medicinal purposes. Together with water, the tree draws various mineral salts from the soil, but does not fully use them. Surplus accumulates in the leaves as ash in furnaces. If the leaves had not fallen, the tree might have poisoned itself. Where there are many factories and factories, the smallest particles of soot settle on the leaves, clog the stomata, evaporation slows down. Therefore, in cities, some trees have to change foliage twice a year. And there is a case when the poplar changed it five times! Children try to pick a green leaf. What happened to him? Children: It broke, but did not come off. Educator: This means that this leaflet will sit on the branch for a long time, it is firmly (strongly) fastened to the branch. And in autumn? The more yellowed or reddened the leaf, the easier it comes off. And there comes a moment when you just have to touch the leaf, as it immediately falls from the branch along with the cutting. Just yesterday
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even a strong wind could not pluck the leaves, but today they fall off on their own. What happened? It turns out that in the autumn at the base of the cutting, in the place where it is attached to the branch, a so-called cork layer appeared. He, like a partition, separated the petiole from the branch. Even a slight breath of wind - and the leaves begin to fall. even a strong wind could not pluck the leaves, but today they fall off on their own. What happened? It turns out that in the autumn at the base of the cutting, in the place where it is attached to the branch, a so-called cork layer appeared. He, like a partition, separated the petiole from the branch. Even a slight breath of wind - and the leaves begin to fall. Educator: Children, do all the trees shed their foliage? Children: No. Educator: Name the trees that do not shed their foliage. Children: Conifers. They have needles. They are always green in winter and summer. Educator: Right. But these needles are called needles. What trees are conifers? Children: Pine, spruce, fir. Educator: And also a cedar. Guys, poets in their poems reflect the arrival of autumn in different ways, but they have the same name. Let's listen to them. Children read poems about autumn. "AUTUMN" The maples are flying around faster and faster. The low vault of heaven is darker. It is more and more visible how the crowns are empty, It is more and more audible how the forest grows numb, And more and more often the Sun, which has cooled to the ground, hides in the mist. I. Maznin "AUTUMN" Autumn at the edge of the paint planted, Through the foliage quietly spent with a brush. The hazel has turned yellow, and the maples have blushed, In the purple of autumn only the green oak, Comforts the autumn - do not feel sorry for the summer! Look - the grove is dressed in gold! Z. Fedorovskaya "AUTUMN" Autumn. Frosty in the morning. In the groves yellow leaf fall Leaves near the birch lie like a golden carpet. In the puddles, the ice is transparent blue. On the leaves, there is white frost. E. Golovin Educator: Well done guys. And now I suggest that you take what you would like to draw the “leaf fall”. Children take paints, pencils, wax crayons and draw “leaf fall” to the accompaniment of the music “Voices of Birds”. After the lesson, the children look at the pictures. Educator: Well done. Everyone coped with the task, everyone succeeded interesting work. Literature: "Why books" G. Graubin. “Teaching children to observe and tell” N.V. Yolkin. "We and the world around" A.N. Kazakov. Proverbs and signs: “In autumn, there are seven weathers in the yard - it sows, blows, circles, stirs, tears, pours from above, sweeps from below.” "The linden blinked with a motley leaf - autumn called." "Father September is cold - yes, there is much to feed." "Such is October: when it covers the earth - when with a leaf, when with a snowball." "People's names for October, the month - leaf breaker, mud, wind blower, wet tail."
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Causes of leaf fall Leaf fall is an adaptation of deciduous trees and shrubs to harsh conditions. If a deciduous tree remains in winter with green leaves, it will die from lack of moisture. The importance of leaf fall in the life of deciduous trees is especially noticeable when compared with conifers. Coniferous trees (especially pine and spruce) - tolerate drought well. In addition, the needles evaporate very little water than the foliage of deciduous trees. Therefore, coniferous trees can remain green all year round. The amount of moisture that conifers evaporate is ten times less than that of deciduous trees. But larch behaves like a deciduous tree and evaporates moisture 5 times more than spruce and 10 times more than pine. The ability of coniferous trees to save moisture is achieved through needles. The needles have many devices for retaining moisture: thick skin, wax coating. The leaves of deciduous trees lack drought-resistant adaptations.
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During leaf fall, deciduous trees get rid of excess mineral salts, which become harmful to trees and shrubs. With age, the ash content of the tree's foliage increases. The accumulation of minerals in deciduous trees occurs because the leaves of the tree evaporate a lot of water. It is replaced by new moisture, which contains minerals. Part of them goes to feed the deciduous tree, the rest remains in the leaves. Leaf fall for a deciduous tree is a normal condition for the normal growth and development of the plant. Coniferous trees do not need such shedding of needles, since pines, spruces and other conifers evaporate very little moisture. Larch, by evaporation of moisture, reaches the level of deciduous trees, therefore, in a humid climate, soft needles are shed. During leaf fall, deciduous trees get rid of excess mineral salts, which become harmful to trees and shrubs. With age, the ash content of the tree's foliage increases. The accumulation of minerals in deciduous trees occurs because the leaves of the tree evaporate a lot of water. It is replaced by new moisture, which contains minerals. Part of them goes to feed the deciduous tree, the rest remains in the leaves. Leaf fall for a deciduous tree is a normal condition for the normal growth and development of the plant. Coniferous trees do not need such shedding of needles, since pines, spruces and other conifers evaporate very little moisture. Larch, by evaporation of moisture, reaches the level of deciduous trees, therefore, in a humid climate, soft needles are shed.
A presentation on the theme of golden autumn tells about this amazing time of the year and its distinctive features. Yellow autumn foliage, flocks of birds flying into the distance, a slightly sad overcast sky and quiet rains are part of the slides that children can see on class hour. The presentation can be used directly educational activities on "Getting to Know the Environment".
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MADOU DSKN No. 8 in Sosnovoborsk at st. Leninsky Komsomol, 39 “LEAF FALL WILL SPUN IN AUTUMN” Prepared by the educator, Zadrovskaya Tatyana Romanovna Sosnovoborsk, 2016
Program content: 1. To generalize and systematize children's ideas about autumn changes in nature, the relationship between animate and inanimate nature in autumn; 2. Develop memory, thinking, imagination, expressiveness of speech, expand and activate the speech reserve; 3. To educate children in respect for nature. Preliminary work: A conversation about autumn. Examining illustrations. Learning poems, riddles, signs. Observations of seasonal changes on a walk. Equipment: Multimedia installation. Presentation "Autumn". Musical background
Leaves from the branches fly around, Birds fly away to the south. "What time of year?" - ask. They will answer us: "This is ..."
What are the periods of autumn? (early and late). Talk about early and late autumn.
Large, fractionally frequented and watered the whole earth. Which picture has the correct answer?
Leaves swirl in the air, Quietly lie down on the grass. The garden sheds its leaves - It's just ... (leaf fall) - What autumn phenomenon is the riddle about? Tell me about the fall.
Which tree does not shed its leaves in autumn? Tell about it. Guess a riddle.
What do people do in autumn, you will find out by guessing the riddle? What we planted in the spring, Then we watered it in the summer. Everything that in autumn ripens in the beds: tasty, sweet! Do not yawn and collect Our autumn ... (Harvest)
Let's play! What is redundant here?
What is redundant here? Why?
What can you say about this picture? How do birds behave in autumn? What are these birds called?
Which bird is missing? Why?
Now let's listen to how animals and birds are preparing for winter. E. Golovin's poem "We gathered and flew"
What's on the rabbit's mind? Prepare for winter. The old one became cold, and - gray, and - too small. T.Umanskaya Why does a hare change its coat? What does he become?
Tell me, what does a squirrel do in autumn? In autumn, the squirrel without haste stored cones, acorns, nuts in the hollow of a birch. Frost is not terrible now!
Now we will listen to how the hedgehog prepares for winter. A ball is rolling in the forest. It has a prickly side. He hunts for bugs and mice at night.
What does a bear do in autumn? Under a snag in a windbreak, a bear sleeps, as if in a house. He put his paw in his mouth and sucks like a little one. G. Ladonshchikov ...
How does a fox prepare for winter? Red fur and fluffy tail, careful step in the forest. The cunning fox hides its beauty for the time being ... T. Headquarters
What animal is the mystery about? How does he prepare for winter? He lives in a dense forest, In a gray fur coat and with a tail, Snaps his teeth, with sharp fangs
What do these animals have in common?
Who is extra? Why?
Guess which picture shows autumn? Why do you think so? Explain your choice.
Each season has its own signs. They are in autumn. Children read a poem by T.A. Shorygina "Autumn Signs".
List of used sources Shorygina T.A. What are the months of the year? Journey into the world of nature. The development of speech. - M .: "Publishing house GNOM and D", 2016. Internet resources: images.yandex.ru
On the topic: methodological developments, presentations and notes
The logic of direct educational activity with the attached didactic complex for speech development in the senior group using the multimedia presentation "Golden Autumn!"
Summary of educational activities with the attached didactic complex for speech development in the middle group. Topic: “Autumn is on the threshold!” Integration of educational areas: “Speech ...
Summary of nodes on non-traditional drawing with a multimedia presentation for the middle group. Theme: "Autumn Carpet"
The use of multimedia presentations in the classroom has turned children's learning into a living, creative and natural process. I offer you a fragment of directly educational activities ...
Tasks: - To acquaint children with the outside world; - to form an idea of seasonal changes in nature; - to cultivate a caring attitude towards nature; - to enrich vocabulary and develop dialogue...