Grade 2 | SCIENCE
WEEK 4 • PRACTICE WORKBOOK • DAYS 16–20
Read the matching lesson in the Week 4 Student Textbook first. Write each answer on the line below its question. Day 20 is answered on your own.
Fillable Practice PDF: Download or open the Week 4 fillable workbook. Type answers into the labeled fields, then save your completed copy.
Week 4 Student Textbook | Week 4 Practice Workbook | Week 4 Teacher Guide | Week 3 Student Textbook | Week 5 Student Textbook | Grade 2 index
Day 16: Do Plants Need Light?
Light test plan
| Plant 1 | Plant 2 | |
|---|---|---|
| Kind of plant | Pea | Pea |
| Water | Same each day | Same each day |
| Room temperature | Same | Same |
| Place | Sunny window | Dark cupboard |
- What is the variable in this test?
Answer: _________________________________________________
- Name one thing that stays the same.
Answer: _________________________________________________
- Predict how Plant 2 will look after two weeks, and explain why.
Answer: _________________________________________________
_____________________________________________
Day 17: Measuring Plant Growth
Light test results (height in centimeters)
| Day | Plant 1 (sunny window) | Plant 2 (dark cupboard) |
|---|---|---|
| Day 1 | 2 cm | 2 cm |
| Day 7 | 6 cm | 7 cm, pale yellow |
| Day 14 | 11 cm | 9 cm, thin, yellow, falling over |
- How tall was Plant 2 on Day 7?
Answer: _________________________________________________
- How much did Plant 1 grow from Day 1 to Day 14?
Answer: _________________________________________________
- Plant 2 was taller on Day 7. Explain why that does not mean it was healthier.
Answer: _________________________________________________
_____________________________________________
Day 18: Comparing Results
Leaf count on Day 14
| Plant 1 (sunny window) | Plant 2 (dark cupboard) | |
|---|---|---|
| Number of leaves | 10 | 4 |
| Leaf color | Dark green | Pale yellow |
| Stem | Thick and upright | Thin and bent |
- How many more leaves did Plant 1 have than Plant 2?
Answer: _________________________________________________
- Describe the stem of Plant 2.
Answer: _________________________________________________
- Compare the two plants using at least two kinds of observations.
Answer: _________________________________________________
_____________________________________________
Day 19: Drawing a Conclusion
Question and evidence
Question: Do pea plants need light to grow well? Evidence from Days 17 and 18: The plant in the sunny window grew 11 cm tall with 10 dark green leaves and a thick stem. The plant in the dark cupboard was thin and pale yellow, had 4 leaves, and was falling over.
- What question did the test ask?
Answer: _________________________________________________
- Name one piece of evidence from the plant in the cupboard.
Answer: _________________________________________________
- Write a conclusion for the light test that includes evidence.
Answer: _________________________________________________
_____________________________________________
Day 20: Independent Check: Light and Plant Growth
Sam’s sunflower test
| Sunflower 1 | Sunflower 2 | |
|---|---|---|
| Water | Same each day | Same each day |
| Sunlight | 8 hours a day | 2 hours a day |
| Height after 3 weeks | 24 cm | 13 cm |
| Leaves | Large and green | Small and light green |
Answer on your own. An adult may read the questions aloud but should not give the answers.
- What was the variable in Sam’s test?
Answer: _________________________________________________
- How much taller was Sunflower 1 than Sunflower 2?
Answer: _________________________________________________
- Write a conclusion for Sam’s test and include evidence.
Answer: _________________________________________________
_____________________________________________
Week 4 Student Textbook | Week 4 Practice Workbook | Week 4 Teacher Guide | Week 3 Student Textbook | Week 5 Student Textbook | Grade 2 index