The Tongue as the Organ of Taste Basic Science Primary 2 First Term Lesson Notes Week 6

Lesson Plan Presentation

Subject: Basic Science

Class: Primary 2

Term: First Term

Week: 6

Age: 7 years

Topic: The Senses – Taste

Sub-topic: The Tongue as the Organ of Taste

Duration: 60 minutes

Behavioural Objectives

By the end of the lesson, pupils should be able to:

1. Identify the taste of different substances.
2. Describe the types of taste of food substances.
3. Distinguish between types of taste.

Key Words

• Taste
• Tongue
• Taste buds
• Sweet
• Sour
• Bitter
• Salty

Set Induction

The teacher will bring various food items with different tastes (e.g., sugar, lemon, bitter leaf, salt) and ask pupils to taste them and describe the flavours.

Entry Behaviour

Pupils have a basic understanding of the five senses and their corresponding organs.

Learning Resources and Materials

• Various food items (sugar, lemon, bitter leaf, salt)
• Flashcards with images of the tongue and food items
• Pictures and diagrams of taste buds

Building Background / Connection to Prior Knowledge

The teacher will remind pupils of the previous lesson about the sense of smell and introduce the focus on the sense of taste.

Embedded Core Skills

• Observation
• Identification
• Description
• Critical thinking

Learning Materials

• Lagos State Scheme of Work
• Basic Science textbooks for Primary 2

Instructional Materials

• Real food items with distinct tastes
• Flashcards
• Pictures
• Diagrams of taste buds

Content Explanation

1. The Tongue as the Organ of Taste:
   • The tongue is the organ we use to taste.
   • It has tiny bumps called taste buds that help us detect different flavours.
2. Taste Buds:
   • Taste buds are small structures on the tongue that sense different tastes.
   • There are different types of taste buds for different flavours.
3. Taste of Substances:
   • Sweet: Sugar, candy, fruits.
   • Sour: Lemon, vinegar.
   • Bitter: Bitter leaf, coffee.
   • Salty: Salt, chips.
4. Importance of Taste:
   • Helps us enjoy food.
   • Alerts us to spoiled or harmful substances.
   • Enhances our eating experience.

Questions

1. The tongue helps us to _____. (a) see (b) hear (c) taste
2. The organ for tasting is the _____. (a) ear (b) eye (c) tongue
3. We use our tongue to detect _____. (a) sounds (b) tastes (c) smells
4. Sugar tastes _____. (a) sour (b) bitter (c) sweet
5. Lemon has a _____ taste. (a) sweet (b) sour (c) salty
6. The _____ allows us to taste different things. (a) tongue (b) ear (c) eye
7. Bitter leaf has a _____ taste. (a) sweet (b) salty (c) bitter
8. Salt has a _____ taste. (a) sweet (b) salty (c) bitter
9. Taste buds are found on the _____. (a) nose (b) tongue (c) ear
10. The tongue helps us to enjoy _____. (a) food (b) music (c) smells

Class Activity Discussion

1. Q: What is taste? A: Taste is the ability to detect different flavours in food and other substances.
2. Q: Which organ is used for tasting? A: The tongue is used for tasting.
3. Q: What are taste buds? A: Taste buds are small structures on the tongue that sense different tastes.
4. Q: What taste does sugar have? A: Sugar has a sweet taste.
5. Q: What taste does lemon have? A: Lemon has a sour taste.
6. Q: Why is tasting important? A: Tasting is important because it helps us enjoy food and alerts us to spoiled or harmful substances.
7. Q: How do we taste food? A: We taste food with our tongue and taste buds.
8. Q: What taste does bitter leaf have? A: Bitter leaf has a bitter taste.
9. Q: What would happen if we couldn’t taste? A: If we couldn’t taste, we wouldn’t be able to enjoy food and detect spoiled substances.
10. Q: What taste does salt have? A: Salt has a salty taste.

Presentation

Step 1: Revision of Previous Topic

The teacher revises the last lesson about the sense of smell by asking pupils to name the organ used for smelling.

Step 2: Introduction of New Topic

The teacher introduces the new topic: “The Senses – Taste,” explaining that the pupils will learn about the sense of taste and the importance of the tongue.

Step 3: Pupil Contributions

The teacher asks pupils to share what they know about tasting and the tongue. The teacher corrects and praises pupils as needed.

Teacher’s Activities

• Present various food items for pupils to taste and identify.
• Show pictures of the tongue and explain its function.
• Discuss the different types of taste (sweet, sour, bitter, salty).
• Guide pupils in associating tastes with specific food items.

Learners’ Activities

• Answer questions about tasting and the tongue.
• Taste and identify different food items.
• Describe the types of taste.
• Discuss the importance of tasting in daily life.

Assessment

The teacher asks pupils to:

1. Name the organ used for tasting.
2. Identify food items by their taste.
3. Describe the different types of taste.
4. Explain the importance of tasting in their daily activities.

Ten Evaluation Questions

1. What sense do we use to taste?
2. Which organ helps us to taste?
3. Name one food item that has a sweet taste.
4. Name one food item that has a sour taste.
5. How does the tongue help us?
6. Why is tasting important?
7. How do we taste food?
8. What taste does bitter leaf have?
9. What would happen if we couldn’t taste?
10. What taste does salt have?

Conclusion

The teacher goes around to mark pupils’ work and provides feedback. The lesson concludes with a brief review and praise for active participation.

More Useful Links

• All Subjects Primary 2 First Term Lesson Notes