Home Free Printables Science 3rd Grade Grade 3 Life Cycles & Inheritance of Traits — Reading Comprehension — Variation Preview — download the full PDF for print-quality output
Science 3rd Grade Ages 8–9
Grade 3 Life Cycles & Inheritance of Traits — Reading Comprehension — Variation Free printable reading comprehension passage about variation. Students read and answer questions to build understanding of variation. For 3rd Grade (ages 8–9).
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Variation SCIENCE · 3RD GRADE Name Date Read the passage, then answer the questions below. Variation describes the differences between individuals of the same species. Some variation is inherited, arising from different combinations of genes; some is caused by the environment, such as a plant growing taller in better soil. Variation matters because it is what natural selection acts on: when conditions change, individuals whose traits happen to suit the new conditions survive and reproduce more successfully. A population with little variation is more vulnerable, since a single disease or change can affect nearly every individual the same way. Questions: 1 Name the two sources of variation. 2 Why does natural selection depend on variation? 3 Why is a population with little variation vulnerable? littleactivity.com 3rd Grade · Science
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Variation SCIENCE · 3RD GRADE Name Date Read the passage, then answer the questions below. Variation describes the differences between individuals of the same species. Some variation is inherited, arising from different combinations of genes; some is caused by the environment, such as a plant growing taller in better soil. Variation matters because it is what natural selection acts on: when conditions change, individuals whose traits happen to suit the new conditions survive and reproduce more successfully. A population with little variation is more vulnerable, since a single disease or change can affect nearly every individual the same way. Questions: 1 Name the two sources of variation. 2 Why does natural selection depend on variation? 3 Why is a population with little variation vulnerable? littleactivity.com 3rd Grade · Science
Observation Log — Sense of Sight SCIENCE · KINDERGARTEN Name Date Record your observation — sense of sight observations. Observation — Sense of Sight Observation Log What to observe: • what you see • what you measure • any changes • questions you have Day Drawing Notes Day 1 sketch First observation — everything looks normal Day 2 Day 3 Day 4 Summary: After observing for 4 days, I noticed... littleactivity.com Kindergarten · Science
Observation Log — Sense of Hearing SCIENCE · KINDERGARTEN Name Date Record your observation — sense of hearing observations. Observation — Sense of Hearing Observation Log What to observe: • what you see • what you measure • any changes • questions you have Day Drawing Notes Day 1 sketch First observation — everything looks normal Day 2 Day 3 Day 4 Summary: After observing for 4 days, I noticed... littleactivity.com Kindergarten · Science
Observation Log — Sense of Touch SCIENCE · KINDERGARTEN Name Date Record your observation — sense of touch observations. Observation — Sense of Touch Observation Log What to observe: • what you see • what you measure • any changes • questions you have Day Drawing Notes Day 1 sketch First observation — everything looks normal Day 2 Day 3 Day 4 Summary: After observing for 4 days, I noticed... littleactivity.com Kindergarten · Science
Observation Log — Sense of Taste SCIENCE · KINDERGARTEN Name Date Record your observation — sense of taste observations. Observation — Sense of Taste Observation Log What to observe: • what you see • what you measure • any changes • questions you have Day Drawing Notes Day 1 sketch First observation — everything looks normal Day 2 Day 3 Day 4 Summary: After observing for 4 days, I noticed... littleactivity.com Kindergarten · Science
Observation Log — Sense of Smell SCIENCE · KINDERGARTEN Name Date Record your observation — sense of smell observations. Observation — Sense of Smell Observation Log What to observe: • what you see • what you measure • any changes • questions you have Day Drawing Notes Day 1 sketch First observation — everything looks normal Day 2 Day 3 Day 4 Summary: After observing for 4 days, I noticed... littleactivity.com Kindergarten · Science
Classification — Five Senses SCIENCE · KINDERGARTEN Name Date Sort each item by the sense you use most to observe it. Five Senses Sight Sound Touch Smell Taste Word Bank — Cut or write each item in the correct column: • rainbow • bell • sandpaper • flower • lemon • sunset • drum • ice • perfume • candy How did you decide where each item goes? littleactivity.com Kindergarten · Science
