Making middle class science lesson plans for leaf specimens1;
1, know the preparation process of making leaf specimens: collection, cleaning and drying, and get a preliminary understanding of the role of leaf specimens in life.
2. Understand the basic methods, main tools and materials for making leaf specimens.
3. Feel the diversity and beauty of leaves and be interested in exploring plants.
Activity preparation:
1, go outdoors to see the fallen leaves, pick up all kinds of fallen leaves you like, and ask the leaves to be complete and flat.
2. Video recording of leaf specimen making process and several prepared leaf specimens.
3. Tools and materials needed for specimen preparation: rags, thick old books (brought by children) and crumpled paper.
4. Audio-visual education equipment: projectors and computers.
Activity flow:
(1) Stimulate children's interest in viewing leaf specimens.
1, the teacher and children sing the song "Little Leaves" together.
2. Teacher: Children like all kinds of leaves. They picked up many leaves they like. Teachers also like all kinds of beautiful little leaves. Look, these are all fallen leaves that teachers like. Are they beautiful? Do you know their names?
(2) Teachers guide children to know and appreciate leaf specimens and understand the significance of making specimens.
1, guide children to observe the difference between leaf specimens and fallen leaves.
Teacher: Are these leaves the same as those just picked by children? What other nice names do these leaves have? (leaf specimen)
2. Children watch leaf specimens.
(1) The teacher guides the children to know the leaf specimen: Have you seen the leaf specimen? Where have you seen it?
(2) Teacher: Why do people collect leaves as specimens? What's the use of specimens?
3, teachers and children * * * Summary: Specimens, like photos, can make people know many different plants more clearly, which is very convenient. Leaf specimens will not wilt and rot, and can be preserved for a long time.
(3) Play video to let children know the simple method of making leaf specimens.
1, let the children guess and talk about the method of making leaf specimens.
2. Watching the video, the teacher affirmed the child's existing experience.
3. Focus on the preparation of leaf specimens.
(4) Teachers and children arrange leaves together to prepare for making leaf specimens.
Guide children to complete the preliminary work of making leaf specimens according to the following procedures: select complete and flat leaves-wipe them clean with a rag-dry them with crepe paper-clamp them with thick old books.
Activity expansion:
1, daily infiltration: lead children to change crepe paper for leaves regularly, observe that leaves are completely dried for a few days and then make specimens.
2. Family education: Ask children to know the methods and steps of making leaf specimens from their parents; Parents use the book "Specimen of Leaves" for their children to guide them to further perceive the process of making leaf specimens.
3. Regional activities: Provide various leaf specimens in the scientific activity area for children to know.
Lesson plan 2 The purpose of making leaf specimens in the middle class in the scientific field:
1, children can boldly use all kinds of leaves to make them, and experience the fun of hand-made in the activity.
2. Cultivate children's sensitivity to beauty.
Activity preparation:
Various specimens and various leaf art papers collected by teachers and students.
Activity flow:
1, show all kinds of specimens to children for observation, and stimulate their desire to make them.
2. Show the collected leaves, let the children observe the shapes of the leaves and say: What objects can these shapes be combined into?
3. The teacher explained and demonstrated the key points of making leaf specimens.
(1), wipe the leaves with a rag and then apply a layer of vaseline.
(2) Put the leaves coated with vaseline in the waste book.
(3) Take out the pressed leaves in a few days and stick them on a piece of white paper.
(4) Teachers help children write down the names of leaves, collectors, collection dates, etc. Theoretically.
(5) Then, put the prepared leaf specimens into the photo album to make leaf specimens.
4. In this activity, children should complete (1), (2) and two steps first.
5, children make it by hand, and teachers tour to guide.
(1), encourage children to be bold.
(2) Tell children to paste carefully.
6. Activity extension: Use the activity time in the corner to complete the three steps (3), (4) and (5).
End of activity:
Children appreciate their works.
Teaching reflection:
The scientific field in the Outline puts forward the following goals: "Be interested in things and phenomena around you, have curiosity and thirst for knowledge;": Can use all kinds of senses, use hands and brain to explore problems; Can express and communicate the process and results of exploration in an appropriate way. " It can be seen that the value orientation in the field of science no longer focuses on the transmission of static knowledge, but on maintaining children's permanent curiosity and desire for knowledge, emphasizing that children actively observe, operate and experiment with various senses, and infer and draw conclusions from the results of exploration.