🌊 Floating and Sinking
An interactive storybook lesson with visuals, video, activity, quiz, and higher order thinking.
🎯 Learning Objectives
- Conditions for floating and sinking.
- Definition of density and its units.
- Direction of weight and buoyant force.
- relating with daily life.
🧩 Competencies
- Conceptual understanding
- Observation skills
- Analytical thinking
- Application skills
- Communication skills
📊 Learning Outcomes
- Floating depends on density and buoyant force.
- A lemon sinks in plain water but floats in salt water.
- Denser liquid gives greater upthrust.
- This idea helps ships float in water.
🎥 Experiment Video
Watch the experiment carefully and observe what happens in plain water and salt water.
📖 Interactive Story Book
Click the buttons below to move through the lesson pages.
Page 1
Page 2
Page 3
Page 4
Page 5
Page 6
Page 7
Page 8
Page 9
Page 10
Page 11
🧪 Quick Sorting Activity
Drag each item into Float or Sink. This is a simple thinking activity for students.
✅ Float
⬇ Sink
Wood
Stone
Empty Plastic Bottle
Iron Nail
📝 Worksheet Quiz
Choose one answer for each question, then click submit.
🧠 Higher Order Thinking Questions
1. What may happen if sugar is added instead of salt?
Sugar may also increase the density of water, but usually not as effectively as salt in this experiment.
2. What if the lemon is very small?
Its floating or sinking will still depend on density, not only on size. A small lemon can still sink or float depending on the water.
3. Why do people float more easily in sea water?
Sea water is denser because it contains dissolved salts, so the buoyant force becomes greater.
4. Can this experiment help compare densities?
Yes. By observing whether an object floats higher, sinks, or stays suspended, students can compare liquids and objects in a simple way.
