☰ Contents · Natural science

Review and research project

Lessons 55–56 · 2 lessons · Y.V. Malikova. Natural Science Grade 3, Part 1. Novda Edutainment, Tashkent, 2023; Y.V. Malikova. Natural Science Grade 3, Part 2. Novda Edutainment, Tashkent, 2023
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Research project

Textbook: Part 2, pp. 116–117
GoalLearn to carry out and present a small research project step by step: problem, aim, hypothesis, experiment, conclusion.
New words
research · tadqiqothypothesis · gipotezaexperiment · tajriba
Explanation

Research is work done to find out something unknown. The steps: 1) choose a topic and ask a question; 2) the aim: what do we want to know; 3) tasks: what will we do; 4) the object of research (what we observe); 5) a hypothesis, a guess at the answer; 6) collect information from books, adults or websites; 7) do the experiment and record results; 8) conclusion: was the hypothesis right?; 9) present the result to the class. Sample topics: “In which conditions do bean seeds sprout fastest?”, “Which substances dissolve in water?”, “At what time of day is a shadow longest?”. Stay safe: work with hot water, sharp objects and chemicals only with an adult. If the result does not match your hypothesis, that is fine: you learned something new.

Worked examples
Hypothesis: “Beans sprout faster in light.” Experiment: plant in two dishes, one in light and one in dark; measure daily.
Conclusion: by day 5 both sprouted; so the hypothesis was partly wrong, seeds do not need light to sprout.
Class activity

In a group choose one research topic, write the aim, tasks and hypothesis and plan a one-week experiment. Present the results as a poster or slides.

Practice
1
What is a hypothesis?
2
Name 4 steps of research.
3
What if the hypothesis proves wrong?
4
What should you do for safety during experiments?