GRADE 7 SCIENCE · CHAPTER 2
Observation & scientific inquiry
Study each lesson in order, or choose the idea you need today.
- Choose a book
- Choose a chapter
- Study a lesson
Ecology & evidence
Interpret a habitat sample
Use repeated samples and stated sampling limits to interpret habitat counts.
AN EXAMPLE FROM THIS CHAPTER
Three equal-area squares contain 4, 6 and 8 seedlings. What is the mean count per sampled square?
Show answer & explanation
6
(4 + 6 + 8) ÷ 3 = 6 seedlings per square.
Curriculum & source notes
These are original Little Play study books organized around U.S. school topics. The official curriculum references below guide topic scope and progression. Coverage is selected, not a complete curriculum or a verified match to every state standard. They are not copies of a publisher’s textbook. Check your school’s syllabus and book edition.
High-school courses can be taken in different years. Choose the topic that matches the student’s current course.
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