Class 4 The World Around Us • Our Wondrous World • Unit: Things Around Us • Chapter 7 • Reprint 2026–27
Answer-first chapter overview
A fair investigation begins with a prediction, changes one relevant factor where possible, observes carefully and records results. Floating depends on more than material alone; shape can matter.
Learning focus
Students investigate spinning, toys, floating and sinking, prediction, testing, material, shape and inquiry records. This is one interdisciplinary learning area, not separate NCERT Science and Social Studies books.
Observation or inquiry activity
With adult supervision, test three safe objects for floating or sinking and record prediction, result and possible reason.
Think and answer
- Why should a prediction be recorded before testing?
- How can shape affect floating?
- What makes an investigation fair?
How should this chapter be studied?
Begin with a safe real-world observation, read the official chapter, discuss evidence, complete the activity, and explain each answer in your own words.
Which book and grade does this page follow?
It follows Class 4 Our Wondrous World code deev1. Class 3 uses ceev1 and has a different 12-chapter sequence; those titles are not mixed here.
Continue learning
Class 4 study hub · All classes · Previous chapter · Next chapter
Official sources: NCERT Chapter 7 PDF · CIET Our Wondrous World book page
Original NCERT Kaksha activity companion; no textbook passage or artwork is reproduced. Retired Looking Around chapters are excluded from the current navigation.