Class 10 Science · Chapter 13 · NCERT (jesc113)
See the tempting mistake students make in Our Environment, why it feels right at first glance, and a worked visual example that shows the right idea.
Wrong
Top predators receive the most energy because they eat other animals.
Why it feels right. I focus on the size or number of prey.
Right
Energy available to a trophic level is a fraction of the energy at the level below.
Worked example
With an illustrative 10% transfer, 1,000 energy units in producers support about 100 in primary consumers and 10 in secondary consumers.
As you work through Our Environment, listen for these everyday misunderstandings and use the prompt alongside each one.
If your child says… “Only living things count.”
If your child says… “Dead leaves disappear by themselves.”
If your child says… “Arrows point towards the food.”
If your child says… “All the energy passes on.”
If your child says… “The poison gets diluted.”
If your child says… “Ozone shields us from heat rays.”
If your child says… “CFCs make the ozone layer thicker.”
If your child says… “Everything can share one bin.”
Compare the tempting wrong rule with the right idea using a worked visual example before or after practice.
For each idea: show it, ask before you tell, then say one line. (8 hands-on steps with photos and worked examples).
3 · Check understandingQuestions grouped by concept, each with a clear explanation.
