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Plan a 40-minute Class 10 lesson on photosynthesis using the 5E model, with a starch-test activity.
09:41
Done — five timed phases built around the variegated-leaf starch test, with support and stretch tasks. The one-page agenda is inside too.
Lesson PlanScience — Life Processes

How plants make their food

Grade / Level
Class 10
Duration
40 minutes
Phases
5 phases
Lesson Type
5E Model
Teacher
Class / Section
Date
Period
1

Essential Questions

Q1Where does the food in a plant come from, if the plant never eats?
Q2What does a leaf need, and what does it give out, when it makes food?
2

Learning Objectives

Bloom's Taxonomy

By the end of this lesson, students will be able to…

Recall & Remember
  • Name the raw materials and products of photosynthesis and write its balanced equation.
Understand & Explain
  • Explain the three events of photosynthesis: absorbing light, splitting water, and reducing carbon dioxide to carbohydrate.
Analyze & Compare
  • Interpret the starch test on a variegated leaf as evidence that chlorophyll is needed for photosynthesis.
3

Preparation

Prior Knowledge
  • Plants are autotrophs; animals are heterotrophs (Class 7).
  • Iodine solution turns blue-black when it meets starch.
  • Leaves have tiny pores on their surface.
Materials & Resources
  • A potted plant with variegated leaves, kept in sunlight
  • Alcohol, a water bath, iodine solution and a Petri dish
  • Chart of a leaf cross-section showing stomata and chloroplasts
  • Chalkboard
4

Key Vocabulary

PhotosynthesisThe process by which green plants use sunlight, carbon dioxide and water to make carbohydrates, giving out oxygen.
ChlorophyllThe green pigment in chloroplasts that absorbs light energy.
StomataTiny pores on the leaf surface through which gases are exchanged.
AutotrophAn organism that makes its own food from simple substances.
5

Lesson Procedure

40 min total
5m
10m
12m
8m
5m

Open with a puzzle: a small sapling grows into a tree weighing tonnes, yet the soil around it barely loses weight.

Teacher cues

  1. 01Pose the sapling puzzle and write students' guesses on the board without correcting them.
  2. 02Hold up the variegated leaf and ask which parts might be making food.

Student actions

  1. 01Suggest where the plant's mass comes from.
  2. 02Predict whether the white and green parts of the leaf both make food.
6

Assessment

During the lesson

Look for understanding as students work

  • Group sketches of the starch-test result
  • Predictions in the bell-jar task
  • Three-question exit ticket
7

Differentiation

Support

Make the learning accessible

  • Give a partly filled equation with the raw materials and products to drag into place.
  • Pair students with a peer who can talk through the starch-test steps.

Stretch

Take the thinking further

  • Ask why the equation shows water on both sides, and what that says about where the oxygen comes from.
  • Compare photosynthesis with respiration in a short table.

Language support

Help students express their understanding

  • Give the key terms with Hindi equivalents: प्रकाश संश्लेषण (photosynthesis), पर्णहरित (chlorophyll), रंध्र (stomata).
  • Allow answers as labelled diagrams before full sentences.
Follow-Up / Homework

Next lesson: how the carbon dioxide gets in — stomata, their opening and closing, and gas exchange.

Teacher Notes

Set the variegated plant in sunlight the day before, so the green regions have had time to make starch.

Teacher signature
How plants make their foodClass 10 · 40 min
09:41
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  2. 2

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  3. 3

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What you get

  • Objectives tagged with Bloom's levels
  • Timed phases with teacher and student actions
  • Support, stretch and language support for mixed classrooms
  • A teacher copy and a one-page agenda

Questions about Lesson Planner

Which lesson plan formats does it support?

Any framework you name — 5E, direct instruction, inquiry-based learning and others. If you don't name one, Classly picks one that suits the topic.

Does it include activities?

Yes. Each phase has what the teacher does and what students do, including activities and experiments from the chapter where they fit.

Can it plan for students who need extra help?

Every plan has a differentiation section with support for students who are struggling, stretch tasks for those ahead, and help for students learning in a second language.

Can I download the lesson plan?

Yes, as a PDF or a Word file you can edit.

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