Additive Thinking and Strategy · Autumn Term

Number Bonds to 20 and Beyond

Recalling and using number bonds to 20, and applying this knowledge to related facts up to 100.

About This Topic

This topic focuses on the beginnings of plant life, specifically the comparison between seeds and bulbs. Students observe the variety of shapes and sizes in the plant kingdom and learn that these small packages contain everything needed for a new plant to start growing. This aligns with the Year 2 National Curriculum for Plants, where pupils are expected to describe how seeds and bulbs grow into mature plants.

By dissecting and observing, children discover the 'hidden' life inside. They learn that while both lead to growth, they have different structures and strategies for survival. This topic particularly benefits from hands-on, student-centered approaches where children can use magnifying glasses to explore the physical differences and predict what will emerge from each.

Active Learning Ideas

Inquiry Circle: Seed Dissection

Provide large soaked seeds like broad beans. In pairs, students carefully peel the skin and split the seed to find the 'baby plant' (embryo) and the food store. They draw what they see and label the parts together.

⏱ 30 min·Pairs

Generate mission

Stations Rotation: Seed and Bulb Sort

Set up stations with various seeds (sunflower, cress, pumpkin) and bulbs (onion, tulip, daffodil). Students rotate to touch, smell, and look at them, recording the differences in size, hardness, and shape in a simple table.

⏱ 40 min·Small Groups

Generate mission

Think-Pair-Share: The Mystery Growth

Show a picture of a giant pumpkin and a tiny seed. Ask students how they think all that 'stuff' fits inside the seed. They discuss their theories on how the seed stores energy before sharing with the class.

⏱ 15 min·Pairs

Generate mission

Watch Out for These Misconceptions

Common Misconception

Seeds are dead objects like stones.

What to Teach Instead

Because seeds are dry and still, children often think they aren't alive. Hands-on modeling of 'waking up' a seed with water helps them understand that seeds are living things in a deep sleep.

Common Misconception

Bulbs and seeds are the same thing.

What to Teach Instead

Students often use the words interchangeably. By cutting an onion (a bulb) in half, they can see the layers of stored food, which looks very different from the solid inside of a bean seed, helping them distinguish the two.

Frequently Asked Questions

What is the main difference between a seed and a bulb?

A seed is usually a tiny package with a baby plant and a small food store inside. A bulb is an underground storehouse of food made of fleshy leaves (like an onion) that helps the plant survive through the winter and grow back the next year.

Do all plants grow from seeds?

Most plants grow from seeds, but some grow from bulbs, tubers (like potatoes), or even spores (like ferns). In Year 2, we focus on seeds and bulbs as the two most common ways we see plants start in our gardens.

What are the best hands-on strategies for teaching seeds and bulbs?

Observation and dissection are key. Letting students handle the materials, feel the papery skin of a bulb, or split a soaked bean allows them to see the internal structures. Planting both in clear jars with wet paper towels lets them watch the different ways they sprout in real-time.

Why do bulbs have so many layers?

Those layers are actually modified leaves that store food. The plant uses this 'packed lunch' to give it the energy to grow quickly in the spring before it even has its own green leaves to make food from the sun.

Browse curriculum by country

• Americas
• US
• CA
• MX
• CL
• CO
• BR

• Europe
• UK
• IE
• FR
• DE
• ES
• IT
• NL
• PT
• SE

• Asia & Pacific
• IN
• SG
• AU