Basic 9 Science Term 1 Week 7 Lesson Plan

Display two images side by side: one of a grasshopper nymph and the other of a caterpillar Ask learners, "How do these two creatures grow into their adult forms?" This serves to intrigue learners about the different forms of metamorphosis

Concrete-resource task: Set out these resources for each group: Sealed grasshopper specimen; Printed grasshopper life-cycle diagram; Leaf with feeding damage. Learners observe and safely handle the specimens or apparatus, using them in the investigation or model below. Provide learners with paper, pencils, and coloring materials. Guide learners in drawing the life cycle of the grasshopper, from egg to nymph to adult. Emphasize the progression and differences at each stage. Using the drawn life cycles, initiate a class discussion about the behavior of grasshoppers at each stage, such as the feeding habits of nymphs versus adults. Encourage learners to share any personal observations or experiences they've had with grasshoppers. Explain the concept of incomplete metamorphosis using the grasshopper as an example. Contrast this with complete metamorphosis, using examples like the housefly and mosquito. Highlight key differences, such as the absence of a pupal stage in incomplete metamorphosis. Facilitate a discussion on why these different life cycles might have evolved and the potential advantages of each. Assessment 1. What are the three main stages of the grasshopper's life cycle? 2. How does the behavior of a grasshopper nymph differ from that of an adult? 3. What stage is missing in the grasshopper's life cycle that makes it "incomplete" metamorphosis? 4. Can you name another insect that undergoes complete metamorphosis?

Use peer discussion and effective questioning to find out from learners what they have learnt during the lesson

Share learning indicators and introduce the lesson.

Learners observe adult features through the Sealed grasshopper specimen and compare them with the nymph and adult images on the Printed grasshopper life-cycle diagram. Groups order egg, nymph and adult stages and explain why there is no pupal stage. They inspect the Leaf with feeding damage as evidence that both nymphs and adults feed while growing. Learners draw the incomplete-metamorphosis cycle and reserve wider human benefits and harms for the next component.

Take feedback from learners and summarize the lesson.

Show a short video clip or images of a swarm of locusts (a type of grasshopper) ravaging crops. Pair this with an image of a single grasshopper in a natural setting. Ask, "How can this small insect have such a massive impact?" Share learning indicators and introduce the lesson.

Concrete-resource task: Set out these resources for each group: Sealed grasshopper specimen; Printed grasshopper life-cycle diagram; Leaf with feeding damage. Learners observe and safely handle the specimens or apparatus, using them in the investigation or model below. For instance, for the beneficial aspect of grasshoppers as a food source, a group might suggest promoting grasshopper farming. On the harmful side, suggestions could include natural pest control methods to protect crops. groups present their findings and suggested activities to the class. Facilitate a class discussion to consolidate learning and share different perspectives. Assessment 1. What are some typical activities of grasshoppers in their natural environment? 2. Name one beneficial impact of grasshoppers on humans. 3. How can grasshoppers be harmful to human activities? 4. Suggest one activity or strategy to mitigate the negative effects of grasshoppers on agriculture.

Use peer discussion and effective questioning to find out from learners what they have learnt during the lesson. Take feedback from learners and summarize the lesson.