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Delaware Grade 1 Science
Plan an original light-and-materials comparison, separate an observation from a prediction, and follow Delaware Grade 1 science references.
Focused lessons · Useful practice · Clear next steps
Standards source: Delaware Science Standards, Delaware Department of Education.
Observe what reaches a screen behind a material
Plan an original light-and-materials comparison, separate an observation from a prediction, and follow Delaware Grade 1 science references.
The Delaware science standards directory identifies NGSS adoption in 2013 and links a state topical arrangement beginning with Grade 3. Use the Publisher NGSS document for the selected performance expectations and their examples and boundaries. This activity selects a Grade 1 expectation. It is one part of a science course, not a complete curriculum.
Will every cover let the same light through?
A classroom plan uses a flashlight, a white screen, and three covers: clear plastic, wax paper, and cardboard. Keep the flashlight and screen in the same places. Put one cover at a time between them. Predict what the lit area on the screen will look like. These are proposed comparisons, not reported classroom results.
Explain the evidence or model
Without a cover, locate the lit area on the screen. Clear plastic is expected to let much of the light through, while wax paper commonly spreads the transmitted light and changes how clear the lit area looks. Cardboard is expected to block the direct beam. Examine the actual pieces before deciding whether those predictions fit. Materials can differ in thickness and finish; a prediction is something to check, not a measurement already collected. Draw the flashlight, cover, and screen in order, then record what can actually be seen.
| Cover | Prediction to check | Observation |
|---|---|---|
| Clear plastic | Much light passes through | Record what the screen shows |
| Wax paper | Transmitted light spreads out | Record what the screen shows |
| Cardboard | Direct beam is blocked | Record what the screen shows |
What to check in the explanation
Do not say that cardboard makes the flashlight stop producing light. It changes the path between the source and screen. Keep the screen position, flashlight setting, and room conditions fixed so that changing more than one condition does not confuse the comparison. A shadow or dimmer area is an observation; a claim about what happens to all the light goes beyond this simple screen observation. Use everyday descriptions before introducing transparent, translucent, and opaque.
Plan the next activity
- Observe the screen without a cover and draw or describe the lit area.
- Test one cover at a time in the same position. Record whether the area looks bright, spread out, or blocked compared with the starting view.
- Compare each observation with the prediction. Repeat an uncertain result before changing the explanation.
Ask the child to point to the part of the model that changed. A useful explanation names the material and describes the screen observation, rather than merely saying the experiment worked. Use the existing light-and-materials lesson and related quiz for additional discussion. This selected comparison does not measure the speed of light.
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
Delaware Science by Grade
Browse Delaware science pages by grade.
Start With a Practice Test
These independently published practice sets open on this page. Use their feedback alongside classroom work; they are not official Delaware assessments or a certified match to the full course.
Delaware Grade 1 Science Practice Test 1
Start here. A first look across a range of science ideas.
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Delaware Grade 1 Science Practice Test 2
Another full set across a range of science ideas.
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Delaware Grade 1 Science Practice Test 3
Another full set across a range of science ideas.
Start test 3 →
Delaware Grade 1 Science Practice Test 4
Another full set across a range of science ideas.
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Delaware Grade 1 Science Practice Test 5
Another full set across a range of science ideas.
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Delaware Grade 1 Science Practice Test 6
Another full set across a range of science ideas.
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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 NGSS and the school’s course plan to select suitable practice.
Sound and Vibrations
A short check on sound and vibrations, with instant scoring and a full explanation for every answer.
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Light, Seeing, and Shadows
A short check on light, seeing objects, and shadows, with instant scoring and a full explanation for every answer.
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Communicating with Light and Sound
A short check on using light or sound to send a message, with instant scoring and a full explanation for every answer.
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Plant and Animal Parts
A short check on the parts that help plants and animals survive, with instant scoring and a full explanation for every answer.
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Parents, Offspring, and Growing Up
A short check on how young plants and animals grow and resemble their parents, with instant scoring and a full explanation for every answer.
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Patterns in the Sky
A short check on the patterns of the sun, moon, and stars, with instant scoring and a full explanation for every answer.
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Daylight Through the Year
A short check on how daylight changes with the seasons, with instant scoring and a full explanation for every answer.
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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.
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Grade 1 Science Quick Review
Use this concise review alongside observations, lessons, and the complete NGSS document. Add course topics that need further explanation.
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Delaware 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 NGSS reference 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
- Questions About a Design Problem
- Sketches and Models of Solutions
- Comparing and Improving Designs
Delaware Grade 1 references for this investigation
These selected references support the activity’s focus. Read the complete NGSS expectations, examples, and boundaries 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 different materials in a beam of light | Read page 11 |
Delaware Grade 1: Math and English Too
Science is part of the Delaware grade 1 subject collection. Use the related subject pages to organize cross-subject study.
Delaware Grade 1 Math
Six full practice tests, printable worksheets, step-by-step lessons, and Delaware Grade 1 math resources.
Open the math center →Delaware Grade 1 English
Reading, writing, and language standards for Delaware grade 1, organized with activities and references with practice for each one.
Open the English center →Delaware Grade 1 Science: useful planning questions
How does Grade 1 connect to Delaware’s science assessment?
Grade 1 is outside Delaware’s NGSS summative assessment grades. The state lists science assessments in Grades 5, 8, and high-school biology. Resources here are independently published practice, not official state assessments or predictions of a state score. Read the official guidance.
Is a prediction the same as an observation?
No. A prediction says what you expect before a comparison. An observation describes what you actually notice when you test a material in the light path.
Where should I check the complete science requirements?
Start with the Delaware science standards directory and the official NGSS references. 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 5, 2026.
Grade 1 Science in Other States
Standards, practice tests, and quizzes for grade 1 science in every state and Washington, D.C.
Start With One Practice Test
Grade 1 is a building year for science in Delaware. Read a short practice test together, review the answer explanations, and choose one idea to explore next.
Start a practice testA USEFUL NEXT STEP
Delaware Grade 1 Science: study questions
How does Grade 1 connect to Delaware’s science assessment?
Grade 1 is outside Delaware’s NGSS summative assessment grades. The state lists science assessments in Grades 5, 8, and high-school biology. Resources here are independently published practice, not official state assessments or predictions of a state score.
Official source ↗Is a prediction the same as an observation?
No. A prediction says what you expect before a comparison. An observation describes what you actually notice when you test a material in the light path.
Where should I check the complete science requirements?
Start with the Delaware science standards directory and the official NGSS references. 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