Free / Grades 3-6, with reading support
Weather Detectives
How can we give useful weather advice without promising what will happen?
5 flexible sessions / about 165 minutes including practice / science, geography, math, reading and art
Reading, watching and paper activities are free. Parents and instructors can save a collection; scheduling it for a student requires Plus or Lifetime. No upload is required.
Before you begin
Read a small table, add and subtract whole numbers, and recognize north, east, south and west. An adult can read aloud or record a spoken explanation.
Indoor investigation. All investigations can stay indoors using the invented data below. Do not go outside to inspect storms, collect lightning data, open windows or climb for a view. For real weather decisions, an adult must check official local forecasts and warnings. These practice diagrams are not live weather information.
Materials
- 5 sheets per learner: Investigation journal
Use the five printable pages or copy their tables into a notebook.
- 1 sheet per learner: Evidence poster
Reuse the blank side of clean paper; a notebook page also works.
- 1 per learner: Pencil
Dictate answers to an adult or point to the supplied evidence.
- 1 shared, optional: Ruler and coloring pencils
Use a straight paper edge and label shapes in pencil. Color is never required.
- 1 shared: Browser with audio or transcripts
Read the linked lesson transcripts together. Print practice separately only if wanted.
Choose the support that fits
- Grades 3-4: read radar vocabulary together; use whole-number comparisons and labeled arrows. Accept a spoken forecast or three carefully supported sentences.
- Grades 5-6: distinguish forecast probability from observed frequency; label chart scales and discuss what one event cannot establish. Explain two limits of radar evidence in the final presentation.
- Access options: enlarge the page, use the video captions/transcripts, dictate or draw answers, and split any session into shorter sittings. The evidence criteria stay the same; speed is not a criterion.
What good evidence looks like
- Name the fictional place, period and units.
- Separate predictions from observations.
- Make a graph and map that match the supplied numbers and directions.
- Support advice with evidence and acknowledge uncertainty.
- Revise one claim after a question or new observation.
These are discussion criteria, not a new automatic score. Existing lesson and worksheet records keep their own subjects. Checking off a planned task does not demonstrate mastery or add a second grade.
Session 1 / about 30 minutes
Prediction or observation?
Goal: Tell a forecast from something that was actually observed.
Preparation / about 5 minutes of adult support: Have journal page 1 ready. Read the invented situation aloud if needed. No local address, location permission or thermometer is needed.
A prediction looks ahead; an observation reports evidence already collected. In our worked example, a forecast predicts 16 C for noon, but the thermometer later reads 14 C. Those are different kinds of statements, even when their numbers match. A rain chance is about a place and period, not a promise that rain lasts that fraction of the day.
Ask: Which sentence could only be written after the event? Hint: look for a measurement and its time before deciding.
- Read a weather forecast / about 6 minutes
- Forecast detectives / about 10 minutes
- Prediction and observation journal / about 14 minutes
Fun fact: A 30% rain chance can still be followed by rain. A chance describes uncertainty, not a guarantee. Source
S3U / Weather Detectives / Journal 1 of 5
Keep two kinds of evidence separate
Invented Maple Town, Tuesday afternoon: the forecast issued at 08:00 predicts 18 C and a 40% rain chance for 12:00-18:00. At 14:00, a thermometer reads 17 C and an observer records light rain.
| Evidence | What does it say? | Type |
|---|---|---|
| 08:00 forecast | 18 C; 40% chance for 12:00-18:00 | |
| 14:00 thermometer | 17 C | |
| 14:00 observer | Light rain |
Write one thing this evidence cannot tell us about the whole afternoon.
Explain why rain at 14:00 does not mean a 40% forecast promised dry weather.
Session 2 / about 35 minutes
Make numbers visible
Goal: Build a labeled bar graph and make a claim that fits three days of data.
Preparation / about 5 minutes of adult support: Have journal page 2 and a pencil ready. A ruler is optional. Use the printed table rather than collecting outdoor measurements.
Compare the same measurement with the same units. For example, highs of 10 C and 13 C differ by 3 C. A graph needs labels and evenly spaced values. Start a rainfall bar graph at zero so the bar lengths are fair. Three days describe this small sample, not the climate of a place.
Ask: Does a missing measurement mean zero? Hint: zero is a measured amount; an empty entry means we do not know.
- Read Weather Tables Without Overclaiming / about 10 minutes
- Weather or Climate? / about 8 minutes
- Graph the Maple Town observations / about 17 minutes
Fun fact: Weather records describe particular conditions; climate describes longer-term patterns. One unusual afternoon cannot establish a place's usual climate. Source
S3U / Weather Detectives / Journal 2 of 5
Three days are evidence, not a whole climate
Invented observations from one station. Make a rainfall bar graph in the space below: day along the bottom, rainfall in mm up the side, starting at zero.
| Day | High temperature (C) | Rainfall (mm) |
|---|---|---|
| Monday | 20 | 1 |
| Tuesday | 23 | 4 |
| Wednesday | 21 | 0 |
What is the total rainfall? How much higher was Tuesday's high than Monday's? Include units.
What can these three days tell us, and what can they not establish?
Session 3 / about 30 minutes
Follow a moving clue
Goal: Use a north arrow and times to describe a path without guaranteeing its next position.
Preparation / about 5 minutes of adult support: Use journal page 3. This is a paper-map investigation; a real compass and outdoor navigation are not required.
On this north-up map, columns A to E run west to east. Times tell us the order of observations. A mark moving from B2 to C2 has moved east. A possible next position is a prediction, not another observed point. Always inspect a map's direction arrow before using up, down, left or right.
Ask: Would turning the paper change the named direction? Hint: turn the north arrow with the map, then compare the same two points.
- Compass skills / about 6 minutes
- Meet the compass / about 10 minutes
- Map a moving weather echo / about 14 minutes
Fun fact: In our map, a quarter turn is 90 degrees and a half turn is 180 degrees. Rotating the paper does not move the fictional town.
S3U / Weather Detectives / Journal 3 of 5
Where was it? Where might it go?
Invented north-up map: columns A, B, C, D, E run west to east; rows 1, 2, 3 run north to south. Maple Town is D2. Draw this grid and label the town, then plot the observations.
| Time | Observed echo position | Observation or prediction? |
|---|---|---|
| 10:00 | A2 | |
| 10:10 | B2 | |
| 10:20 | C2 |
Name the direction of the observed movement. Suggest one possible next position, labeled as a prediction.
Why can we not promise that rain will reach Maple Town at 10:30?
Session 4 / about 35 minutes
Write without overpromising
Goal: Use a radar legend, time and uncertainty to write a careful explanation.
Preparation / about 8 minutes of adult support: Read the radar vocabulary together for younger learners. Keep the task focused on legends and timestamps before introducing different radar products.
Radar measures returned signals, not a photograph of every raindrop. A legend explains the product being shown. One image does not establish a path; a sequence gives more evidence. Compare these two sentences: "Rain will arrive exactly at noon" and "This sequence suggests movement toward town, but the next position is uncertain." The second matches what the sequence can support.
Ask: What extra information would make the advice more useful? Hint: look for the product name, the latest time and an official forecast; do not guess a warning from a color.
- Weather radar detectives / about 6 minutes
- Radar is a measurement / about 12 minutes
- Write a careful weather explanation / about 17 minutes
Fun fact: Radar returns can include insects as well as water droplets or ice. An echo is a clue that needs interpretation. Source
S3U / Weather Detectives / Journal 4 of 5
Advice with evidence
Use the invented echo positions from session 3. Write or dictate a short explanation for Maple Town's pretend garden club. Say what was observed, what might happen next, and what an adult would need to check before a real outdoor activity.
| Include | Your evidence |
|---|---|
| Place and times | |
| Observed direction | |
| One uncertainty |
Write your explanation. Use may, might or suggests where the evidence is uncertain.
Underline one evidence statement. Circle one prediction. Improve one sentence that promises too much.
Session 5 / about 35 minutes
Make the evidence useful
Goal: Present a weather evidence poster and revise one claim after a question.
Preparation / about 10 minutes of adult support: Set out the journal and one blank sheet. Invite a connected adult to listen when available, or rehearse privately and write a question to discuss later. Nobody is monitoring live.
A useful poster makes the evidence easy to check. Give your chart a title, show units, label the map's north arrow, and keep "observed" apart from "predicted." A careful revision is progress: changing an overconfident sentence makes the explanation stronger. Your poster may be plain pencil; decoration is not the evidence.
Ask: Which claim is best supported, and which needs more evidence? Hint: point to a specific number or dated position before commenting on the artwork.
- Create a weather evidence poster / about 15 minutes
- Present and revise weather advice / about 10 minutes
- Reflect on the evidence / about 10 minutes
Fun fact: Even a 100% rain chance for a stated period does not specify that rain lasts every minute of it. Probability and duration answer different questions. Source
S3U / Weather Detectives / Journal 5 of 5
My evidence review
Make the poster on a separate sheet. Use only the invented place and data. You can show the work in person; no upload, public post, video or real location is needed.
| Check the evidence | Point to your example |
|---|---|
| Place, times and units are named | |
| Graph and map match the data | |
| Observations and predictions are distinct | |
| Advice acknowledges uncertainty |
A question I asked or received, and the change I made:
Something I understand better now, and something the evidence still cannot tell me:
What changed in your explanation?
Show your evidence, explain one revision, and choose a question to investigate next. You can keep everything on paper.
Optional: record actual offline learning in Learning Records. Keep reported minutes separate from website time. For an assigned pack, use your existing daily tasks; this page does not award additional completion credit.