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Iowa Grade 1 Science
Plan a flashlight comparison with clear plastic, wax paper, and cardboard, record what reaches a screen, and explain a selected Iowa Grade 1 light expectation.
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Standards source: Iowa Science Standards, Iowa Department of Education.
Test how different materials affect a beam of light
Plan a flashlight comparison with clear plastic, wax paper, and cardboard, record what reaches a screen, and explain a selected Iowa Grade 1 light expectation.
The Iowa science standards directory links the science standards adopted May 8, 2025. Use the 2025 Iowa Academic Standards: Science for the selected performance expectation and its complete supporting information. This activity selects a Grade 1 expectation. It is one part of a science course, not a complete curriculum.
What happens behind a material placed in the light path?
A teacher sets a flashlight facing a white screen and places one material at a time between them. The class compares clear plastic, wax paper, and cardboard of teacher-selected thicknesses. They keep the flashlight, screen, and material positions consistent. The example notes below describe expected possibilities, not measurements already collected by the class. Students plan the comparison and replace these notes with their actual observations.
Explain the evidence or model
Clear plastic commonly allows a distinct bright area to remain visible on the screen. Wax paper allows some light through but scatters it, so the appearance differs from the clear-plastic trial. Cardboard blocks the direct beam and produces a dark shadow region. A student should describe the screen behind the material, rather than just say the material looks bright. The same lamp can produce different screen observations because the materials affect the path of its light differently. Compare each trial with the unobstructed beam, and record an unexpected result instead of changing it to match the example.
| Sample | Screen observation to investigate |
|---|---|
| No material | Reference appearance of the beam |
| Clear plastic | Light passes; compare the bright area |
| Wax paper | Some light passes and is scattered |
| Cardboard | Direct beam is blocked in a shadow region |
What to check in the explanation
A translucent sample does not make all light disappear, and transparent does not mean every possible light ray passes unchanged. The material’s thickness and the setup can affect what is seen. Do not treat a shadow as a new substance made by the cardboard. A screen may receive stray light from the room even where the direct beam is blocked. Keep the comparison focused on these classroom observations; the selected Iowa clarification does not require explaining the speed of light. Shine the flashlight toward the screen, not into anyone’s eyes.
Plan the next activity
- Plan where the light, sample, and screen will remain for each trial.
- Observe the unobstructed beam and then each selected material.
- Describe the differences and connect them with the material in the path.
Ask a partner to read the record and identify which observation supports each conclusion. Repeat a trial if the screen or flashlight moved, labeling the repeated record rather than erasing a confusing result. A teacher can introduce a mirror as a separate question about redirecting light; keep that distinct from transmission through a sample. Students should help plan what stays the same, not simply memorize names for materials. This activity contributes to the Iowa Grade 1 investigation expectation while leaving other sound and light questions for later lessons.
Grade 1 Science: Learn, Practice, and Quiz
Read a short lesson, work through its example, and try a related science-area quiz. States organize these ideas differently; use your state standards to choose what matches your class.
Physical Science
Life Science
Earth & Space
Iowa Science by Grade
Browse Iowa science pages by grade.
Start With a Practice Test
These independently published practice sets open on this page. Check their directions and topic coverage alongside current Iowa assessment guidance. Use their feedback alongside classroom work; they are not official Iowa assessments or a certified match to the full course.
Iowa Grade 1 Science Practice Test 1
Start here. A first look across a range of science ideas.
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Iowa Grade 1 Science Practice Test 2
Another full set across a range of science ideas.
Start test 2 →
Iowa Grade 1 Science Practice Test 3
Another full set across a range of science ideas.
Start test 3 →
Iowa Grade 1 Science Practice Test 4
Another full set across a range of science ideas.
Start test 4 →
Iowa Grade 1 Science Practice Test 5
Another full set across a range of science ideas.
Start test 5 →
Iowa Grade 1 Science Practice Test 6
Another full set across a range of science ideas.
Start test 6 →
Grade 1 Science Skill Quizzes
Choose a science-area quiz after studying its related lesson. These independent resources may include topics beyond this grade’s expectations; use the adopted Iowa standards and the school’s course plan to select suitable practice.
Sound and Vibrations
A short check on sound and vibrations, with feedback to review after answering.
Start quiz →
Light, Seeing, and Shadows
A short check on light, seeing objects, and shadows, with feedback to review after answering.
Start quiz →
Communicating with Light and Sound
A short check on using light or sound to send a message, with feedback to review after answering.
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Plant and Animal Parts
A short check on the parts that help plants and animals survive, with feedback to review after answering.
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Parents, Offspring, and Growing Up
A short check on how young plants and animals grow and resemble their parents, with feedback to review after answering.
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Patterns in the Sky
A short check on the patterns of the sun, moon, and stars, with feedback to review after answering.
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Daylight Through the Year
A short check on how daylight changes with the seasons, with feedback to review after answering.
Start quiz →
Grade 1 Science Study Tools
A few minutes of review between practice tests, easy enough to do together. Both open right here.
Grade 1 Science Flashcards
Review terms in this independently published deck. Use the classroom’s vocabulary and reading level to decide which entries need practice.
Start flashcards →
Grade 1 Science Quick Review
Use this concise review alongside observations, lessons, and the complete Iowa grade-level document. Add course topics that need further explanation.
Open quick review →
Iowa Grade 1 Science Topics
Use these brief labels as a study navigator, not as full standards or a certified alignment map. Use the official Grade 1 expectations to check which details and boundaries apply. Read the linked Iowa grade-level document for official requirements.
Physical Science
- Sound and Vibrations
- Light and Seeing Objects
- Light Through Materials
- Sending Messages with Light and Sound
Life Science
- Learning from Plant and Animal Parts
- Parents and Their Young
- Similarities Between Young Organisms and Parents
Earth and Space Science
- Patterns in the Sky
- Daylight Through the Seasons
Engineering design: check grade-band expectations
- Engineering Design
- Engineering Design
- Engineering Design
Iowa Grade 1 references for this investigation
These selected references support the activity’s focus. Read the complete Iowa expectation and supporting information through the state directory. Check the school’s course plan for the rest of the year’s topics.
| Reference | Selected focus | Official document |
|---|---|---|
| 1-PS4-3 | Investigate materials placed in a beam of light | Read page 31 |
Iowa Grade 1: Math and English Too
Science is part of the Iowa grade 1 subject collection. Use the related subject pages to organize cross-subject study.
Iowa Grade 1 Math
Six full practice tests, printable worksheets, step-by-step lessons, and Iowa Grade 1 math resources.
Open the math center →Iowa Grade 1 English
Reading, writing, and language standards for Iowa grade 1, organized with selected activities and references.
Open the English center →Iowa Grade 1 Science: useful planning questions
How does Grade 1 connect to Iowa’s science assessment?
Grade 1 is outside Iowa’s ISASP science testing grades of 5, 8, and 11. Iowa’s 2026–27 required-assessments overview identifies ISASP science in Grades 5, 8, and 11, with an assigned alternate-assessment pathway for eligible students. Follow the school’s current assessment assignment and guidance. This original investigation and the independent practice here do not represent the full assessment or predict a state score. Read the official guidance.
Does a shadow mean the cardboard created a new substance?
No. The cardboard blocks the direct light path. Describe the darker region on the screen and compare it with the unobstructed beam.
Where should I check the complete science requirements?
Start with the Iowa science standards directory and the 2025 adopted state science document. Read the Grade 1 expectations and their boundaries alongside the school’s curriculum plan. The selected investigation and resources here do not certify complete course coverage. Read the official guidance.
State sources checked October 6, 2026.
Grade 1 Science in Other States
Standards, practice tests, and quizzes for grade 1 science in every state and Washington, D.C.
Choose useful science practice
Match the available task to the unit being taught. Discuss the evidence and explanation alongside classroom work; an independent practice score does not establish complete course coverage or state-assessment readiness.
Start a practice testA USEFUL NEXT STEP
Iowa Grade 1 Science: study questions
How does Grade 1 connect to Iowa’s science assessment?
Grade 1 is outside Iowa’s ISASP science testing grades of 5, 8, and 11. Iowa’s 2026–27 required-assessments overview identifies ISASP science in Grades 5, 8, and 11, with an assigned alternate-assessment pathway for eligible students. Follow the school’s current assessment assignment and guidance. This original investigation and the independent practice here do not represent the full assessment or predict a state score.
Official source ↗Does a shadow mean the cardboard created a new substance?
No. The cardboard blocks the direct light path. Describe the darker region on the screen and compare it with the unobstructed beam.
Where should I check the complete science requirements?
Start with the Iowa science standards directory and the 2025 adopted state science document. Read the Grade 1 expectations and their boundaries alongside the school’s curriculum plan. The selected investigation and resources here do not certify complete course coverage.
Official source ↗Resources from Effortless Math · Editorial standards · Test details checked October 5, 2026