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Washington Grade 1 Science
Explain how illumination makes a nonluminous toy visible, distinguish an object from a light source, and follow a selected Washington Grade 1 science reference.
Focused lessons · Useful practice · Clear next steps
Standards source: Washington science standards.
Explain Why Light Helps Us See
Explain how illumination makes a nonluminous toy visible, distinguish an object from a light source, and follow a selected Washington Grade 1 science reference.
The Washington science directory identifies the Next Generation Science Standards and their three dimensions. This activity selects a reference from the OSPI-linked NGSS DCI arrangements, September 2017 edition. Check the school’s curriculum sequence and the complete chosen requirement. This activity selects a Grade 1 Washington science expectation. It is one part of a science course, not a complete curriculum.
The Washington science standards combine science and engineering practices, disciplinary core ideas, and crosscutting concepts. Connect all three dimensions when reading the complete performance expectation. Use the school’s course sequence to plan other investigations, models, and explanations. The general lesson library below may include review or enrichment beyond this grade’s course. This original activity is a focused starting point, not a complete curriculum crosswalk.
The toy in the picture
A teacher supplies two observation cards showing the same toy in a room. The first says that no light reaches the toy and its shape cannot be seen. The second says a lamp illuminates it and its shape can be seen. The toy does not make its own light. What changed, and what explains seeing it in the second card?
Explain the evidence or model
The lamp supplies light in the second card. Light reaches the toy, and some reflected light can reach the observer’s eyes. The toy can therefore be seen without making its own light. Its shape has not changed between the cards; the supplied difference is illumination. A lamp is a light source, while this toy is an illuminated object. Point to the observation on each card when explaining the difference. Saying that eyes shine a beam onto the toy would not match this model. A useful drawing puts the lamp, toy, and observer in the explanation rather than just drawing the toy more brightly.
| Card | Light reaching the toy | Reported observation |
|---|---|---|
| First | None | Toy shape cannot be seen |
| Second | Lamp light | Toy shape can be seen |
What to check in the explanation
These are teacher-provided model cards, not an instruction for a child to enter a dark room. The example concerns a toy that does not emit light. It does not compare objects that glow or every possible lighting condition.
Plan the next activity
- Name the light source and the illuminated object.
- Draw how light connects the lamp, toy, and observer.
- Explain the new card in which the toy is not illuminated.
Add a third card in which the lamp shines elsewhere and no light reaches the toy. Explain why merely having a lamp somewhere in the room does not establish that the toy is illuminated.
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
Washington Science by Grade
Browse Washington 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 Washington assessment guidance. Use their feedback alongside classroom work; they are not official Washington assessments or a certified match to the full course.
Washington Grade 1 Science Practice Test 1
Start here. A first look across a range of science ideas.
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Washington Grade 1 Science Practice Test 2
Another independent science practice set.
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Washington Grade 1 Science Practice Test 3
Another independent science practice set.
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Washington Grade 1 Science Practice Test 4
Another independent science practice set.
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Washington Grade 1 Science Practice Test 5
Another independent science practice set.
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Washington Grade 1 Science Practice Test 6
Another independent science practice set.
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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 Washington science 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.
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Light, Seeing, and Shadows
A short check on light, seeing objects, and shadows, with feedback to review after answering.
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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.
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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 Washington science standards document. Add course topics that need further explanation.
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Washington Grade 1 Science Topics
Use these brief labels as a study navigator, not as full standards or a certified alignment map. Use the selected Washington Grade 1 expectations to check which details and boundaries apply. Read the complete Washington science standards 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 the grade expectations
- Questions About a Design Problem
- Sketches and Models of Solutions
- Comparing and Improving Designs
Washington Grade 1 references for this investigation
These selected references support the activity’s focus. Read the complete Washington science standards expectation in the linked document, including the stated practices, core ideas, crosscutting concepts, and relevant engineering expectations, alongside the school’s course sequence. Check the school’s course plan for the rest of the year’s topics.
| Reference | Selected focus | Washington science standards document |
|---|---|---|
| 1-PS4-2 | Explain Why Light Helps Us See | Read page 11 |
Washington Grade 1: Math and English Too
Science is part of the Washington grade 1 subject collection. Use the related subject pages to organize cross-subject study.
Washington Grade 1 Math
Explore practice, printable resources, and lessons for Washington Grade 1 math.
Open the math center →Washington Grade 1 English
Reading, writing, and language standards for Washington grade 1, organized with selected activities and references.
Open the English center →Washington Grade 1 Science: useful planning questions
How does Grade 1 connect to Washington’s science assessment?
OSPI lists the Washington Comprehensive Assessment of Science (WCAS) in Grades 5, 8, and 11. Grade 1 is outside those listed general science testing grades. WA-AIM has separate participation guidance. Follow the school’s current directions and use classroom observations and explanations. Independently published practice has its own tools, timing, questions, and scoring; it is not an official state assessment. Read the official guidance.
Does an object have to produce light to be visible?
No. A nonluminous object can be seen when it is illuminated and light from it reaches the observer’s eyes.
Where should I check the complete science requirements?
Read OSPI’s science page and the complete Washington grade or middle-school-band expectation, including the stated practices, core ideas, crosscutting concepts, and relevant engineering expectations. This activity covers one selected focus, not the complete course. Read the official guidance.
State sources checked October 6, 2026. Read the Washington assessment directory for later guidance.
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
Washington Grade 1 Science: study questions
How does Grade 1 connect to Washington’s science assessment?
OSPI lists the Washington Comprehensive Assessment of Science (WCAS) in Grades 5, 8, and 11. Grade 1 is outside those listed general science testing grades. WA-AIM has separate participation guidance. Follow the school’s current directions and use classroom observations and explanations. Independently published practice has its own tools, timing, questions, and scoring; it is not an official state assessment.
Official source ↗Does an object have to produce light to be visible?
No. A nonluminous object can be seen when it is illuminated and light from it reaches the observer’s eyes.
Where should I check the complete science requirements?
Read OSPI’s science page and the complete Washington grade or middle-school-band expectation, including the stated practices, core ideas, crosscutting concepts, and relevant engineering expectations. This activity covers one selected focus, not the complete course.
Official source ↗Resources from Effortless Math · Editorial standards · Test details checked October 5, 2026