Eclipse 2028 practical guide
Eclipse 2028 Classroom Pack: Lessons and Activities
The eclipse connects geometry, geography, time, evidence and observation without requiring students to look directly at the Sun.
Lesson one: model the shadow
Use a lamp, small ball and screen to distinguish umbra and penumbra. Ask how distance changes shadow size, then identify why the model is not to scale. The goal is the relationship between alignment and shadow, not a perfect miniature solar system.
Lesson two: read the path as data
Plot selected NASA centre-line and limit coordinates. Convert UTC samples to relevant local civil time and discuss why timezone labels need dates. Compare a city centre with another coordinate and explain why a path band is not a list of approved sites.
Lesson three: project safely
Construct a pinhole projector or use a perforated card to cast multiple solar images onto a shaded surface. Look at the projection, never through the hole. Teachers should review current official guidance and prohibit unsupervised optical improvisation.
Lesson four: evaluate claims
Give students a forecast icon, monthly climate average, eclipse map and sourced contact table. Ask what each can support. This separates weather from climate, geometry from land access, and calculated time from observation.
Assessment task
Students create a one-page plan for a stated coordinate: event type, contact sequence, safe observation method, one uncertainty and two sources. They must label assumptions. The task can be completed without travel and should never require direct solar viewing.
Extension work can compare two coordinates, audit an online claim, or design a data table for temperature or light. Mark transparent method and evidence more highly than confident prediction.
Teacher preparation and risk control
Before class, test every demonstration in the room where it will run. A projection activity needs a stable screen, a controlled viewing direction, and an adult who can stop the activity immediately. Do not improvise with binoculars, telescopes, cameras, mirrors, or homemade filters. Students can learn the geometry from projected images, diagrams, and supplied data without any direct look at the Sun.
Prepare two datasets: one with clean NASA path samples and one with deliberately incomplete or misleading claims. Ask students to label what is measured, calculated, inferred, or unknown. A strong answer might say that a city is inside the broad path but that a particular sports field still needs access permission and a horizon check. That distinction is the central research skill.
Assessment rubric
- Geometry: the student distinguishes umbra, penumbra, magnitude, and totality.
- Safety: the plan uses indirect projection or verified viewers and identifies who controls the procedure.
- Evidence: every important number has a source and a date.
- Uncertainty: assumptions and limitations are stated rather than hidden.
- Communication: another person could follow the plan without guessing.
Extension for younger and older students
For early-primary classes, replace the coordinate-plotting lesson with a simple sequence activity: order photographs or drawings of a partial eclipse's progress, and describe what changes in light and shadow without naming numbers. The pinhole-projection lesson works largely unchanged at this level and is the strongest hands-on component for younger students.
For senior physics or earth-science students, extend lesson two into orbital mechanics: the Moon's orbit is inclined about 5 degrees to Earth's orbital plane, which is why eclipses do not occur every new moon - only when a new moon coincides with the Moon crossing that plane near a node. Students can research why the apparent sizes of the Sun and Moon are similar enough from Earth to permit total eclipses at all, an approximate coincidence of orbital geometry rather than a designed relationship, and connect it to the difference between a total and an annular eclipse.
A further extension for senior students: because the Moon is slowly receding from Earth, total solar eclipses become rarer over astronomically long timescales and will eventually stop occurring altogether, leaving only annular eclipses. That timescale is measured in hundreds of millions of years, far beyond any human planning horizon, but it is a useful prompt for discussing the difference between an astronomical process and a historical one.
Frequently asked questions
Can students look at the Sun during a classroom demonstration?
No, never directly and never through an improvised filter. Every classroom activity in this pack uses indirect projection or supplied diagrams so no student needs to look at the Sun.
What's the minimum equipment needed to run these lessons?
A lamp, a small ball, and a screen cover lesson one; a pinhole card or perforated screen covers lesson three. No telescope, camera, or purchased filter is required for any core lesson.
Found an error? See the correction policy.
Extend the lesson
Pair this pack with the how eclipses work explainer for older students, verify current path data on the interactive map, review eye safety before any classroom demonstration, and see citizen science during the eclipse for an extension project.