☰ Contents · Biology

Humans and nature; observing the school grounds

Lessons 27–28 · 2 lessons · O‘. Pratov, A. To‘xtayev, F. Azimova, Z. Tillayeva. Biology, Grade 5. Revised and expanded 5th edition. “O‘zbekiston” publishing house, Tashkent, 2020
28

Practical 7: Seasonal changes in the plants and animals of the school grounds

Textbook: pp. 85–86
GoalWith adult help, observe the plants and animals of the school grounds, record data in a table and draw a conclusion about seasonal change.
New words
seasonal change · mavsumiy o‘zgarishobservation notebook · kuzatish daftaritree, shrub, herb · daraxt, buta, o‘tconclusion · xulosa
Explanation

In this practical lesson we observe the living nature of the school grounds together with the teacher. The observation has three parts. 1) Plants: find which trees, shrubs and herbs grow in the yard, which of them bear fruit and which stay green in winter, and write down how many there are. 2) Animals: choose one tree and watch from a distance which birds and insects visit its branches and trunk; follow an ant trail and notice what the ants carry. Only adults loosen the soil; any earthworm found is gently returned, because it loosens the soil. 3) Damp places: look at algae by the canal, mosses in the shade and tadpoles in the water only from a distance, without touching. Record observations in a table: date, place, weather, what you saw. If you repeat the observations in autumn and spring you can compare seasonal changes (leaf fall, blossoming, arrival and departure of birds). Conclusion: changes in nature are linked to temperature and the length of the day.

Worked examples
A table row: “12.10 – school orchard – clear, +16 °C – 3 sparrows in the apple tree, leaves yellowing”. Such entries can be repeated in spring and compared.
If 7 of the 18 trees in the school yard are fruit trees, then 18 − 7 = 11 are not.
Class activity

Go out into the yard with the teacher, observe by the steps above and complete the table. Safety: only with adults; do not pick or taste unknown plants, fruits or mushrooms; do not touch ant nests or bee nests, and do not approach birds’ nests; keep away from water bodies; only adults use the spade; wash your hands with soap afterwards.

Practice
1
What information goes into an observation table?
2
What should you do if you find an earthworm and why?
3
There are 24 trees in the school orchard, 15 of them fruit trees. How many are not fruit trees?
4
Why is it useful to repeat observations in autumn and spring?