Ontario · SNC1W, SPH3U, SPH4U, SES4U

Space for Schools: Ontario, Grades 9 to 12

Space for Schools: Ontario secondary matches free live space tools to SNC1W Space Exploration, with a card for every specific expectation in Strand E, and to Grade 11 and 12 Physics and Earth and Space Science.

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At a glance
19classroom activities
14live tools
3grade bands
5printable worksheets

Curriculum links last reviewed November 2026.

Grade 9 Science (SNC1W): Space Exploration

Ages 14 to 15

A card for every specific expectation in Strand E of the de-streamed Grade 9 course (2022): what space exploration costs and gives us, the Sun, the origin of the universe, distances in space and the sky seen from the Earth.

Launch schedule

Every upcoming rocket launch, and when it lifts off.

SNC1W · E1.1
Students will

evaluate the social, environmental and economic impacts of rocket launches and space exploration.

10-minute activity

Find the next launch on the schedule and what it carries. In groups, list one social, one environmental and one economic impact of that mission. Is it worth it? Each group defends its view in one minute.

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Satellite directory: Earth from space

Orbit details for thousands of satellites: height, period and inclination.

SNC1W · E1.2
Students will

explain how satellites help us understand climate change and respond to natural disasters such as wildfires and floods.

10-minute activity

Search the directory for RADARSAT and note its height and orbit. Pick a recent wildfire or flood in Canada and explain how satellite images could help firefighters or emergency planners. What can a satellite see that people on the ground cannot?

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GPS tracker

Where the GPS satellites are right now.

SNC1W · E1.3
Students will

describe how technology built for space, such as satellite navigation, is used on the Earth, including to farm and travel more sustainably.

10-minute activity

Watch the GPS satellites on the tracker: a phone needs signals from at least four to work out where it is. List jobs in Canada that use satellite positioning, from farming to shipping. How can a farmer use GPS to spread less fertilizer?

Go deeper
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The Sun in 3D

A live 3D globe of our nearest star.

SNC1W · E2.1
Students will

describe the Sun's main features, such as sunspots and flares, and explain why the Sun matters for the solar system and for life on the Earth.

10-minute activity

Spin the Sun globe and count the sunspots facing us today: they are cooler, darker patches where magnetic fields are strong. List three ways life on the Earth depends on the Sun. What would change first if the Sun dimmed by a tenth?

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Aurora forecast

Tonight's chance of seeing the northern lights, town by town.

SNC1W · E2.2
Students will

explain how particles from the Sun cause the northern lights, and why they are seen most often in northern Canada.

10-minute activity

Check tonight's forecast for your town and for Yellowknife. Why is the chance so much higher in the north? Draw the path of particles from the Sun to the Earth's magnetic field and down into the upper air, where they make it glow.

Pick your town

Yellowknife · Whitehorse · Edmonton · Winnipeg

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Space telescopes

The telescopes working in space, from Hubble to JWST, and what each one is for.

SNC1W · E2.3
Students will

summarize the evidence telescopes have gathered about how the universe and the solar system began.

10-minute activity

Use the list to find the telescopes that look at the most distant galaxies. Light from far away left long ago, so these telescopes look back in time. Each group summarizes one piece of evidence for how the universe began, in two sentences.

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Worlds: the Moon, Mars and the Sun

Real-time 3D globes of the Moon, Mars and the Sun.

SNC1W · E2.4
Students will

compare the Moon, Mars and the Sun: what kind of body each one is, its size and its gravity.

10-minute activity

Open the three globes. Fill a table with each body's type (moon, planet, star), its size compared with the Earth and its surface gravity. Then add one more body from the solar system and compare it with the other three.

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Deep Space: light-time

How far each spacecraft is, and how long its signal takes to reach us.

SNC1W · E2.5
Students will

measure distances in the solar system in kilometres, astronomical units and light-time, and choose the right unit for each.

10-minute activity

Find Voyager 1's distance on the map. It is so far away that a message takes about a day to reach it. Write its distance in kilometres, then in astronomical units (1 AU is about 150 million km). Which unit is easier to use, and why?

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ISS Visible Tonight

When the space station passes over your town, to the minute, and where to look.

SNC1W · E2.6
Students will

predict when the space station will pass over their town, observe it, and explain why it shines.

10-minute activity

Find the next evening pass for your town: its start time, direction and highest point. Predict where it will appear, then check that night. Why can we see the station only shortly after sunset or before sunrise?

Pick your town

Toronto · Vancouver · Montreal · Calgary

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Eclipse tracker

Every upcoming eclipse, and how much of the Sun will be covered from your town.

SNC1W · E2.6
Students will

explain the causes of solar and lunar eclipses, and why they do not happen every month.

10-minute activity

Find the next eclipse that can be seen from your town. The Moon's orbit is tilted by about 5 degrees to the Earth's, so most months the Moon passes above or below the Sun. Model it with a tilted hoop round a lamp.

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Grades 11 and 12 Physics (SPH3U, SPH4U)

Ages 16 to 18

Gravity and weight in SPH3U, and gravitational fields, satellite orbits and storm-tracking satellites in SPH4U.

Worlds: gravity on other worlds

Real-time 3D globes of the Moon, Mars and the Sun.

SPH3U · C3.4
Students will

use W = mg to relate mass, gravitational field strength and weight on the Earth, the Moon, Mars and at the space station's height.

10-minute activity

A 70 kg astronaut weighs about 690 N on the Earth (g = 9.8 N/kg). Work out their weight on the Moon (1.6 N/kg) and on Mars (3.7 N/kg). Then use the worksheet to find g at the space station: why do astronauts float if gravity there is still about 90% as strong?

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Live ISS tracker: circular motion

Where the ISS is right now, and how fast it is going.

SPH4U · D2.2
Students will

use the space station's live height and speed to analyze its orbit as uniform circular motion under gravity.

10-minute activity

Read the station's height and speed from the tracker. Work out its orbital radius, the distance round one orbit and the time for one lap. Then check that its centripetal acceleration matches g at that height, using Newton's law of universal gravitation.

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Satellite directory: weather satellites

Orbit details for thousands of satellites: height, period and inclination.

SPH4U · D1.2
Students will

explain how weather satellites in geostationary and polar orbits help forecasters track storms, and why each orbit is used.

10-minute activity

Find a geostationary weather satellite and a polar-orbiting one in the directory, and compare their heights and periods. Which can watch a hurricane all day, and which sees the whole Earth, strip by strip? Why do forecasters need both?

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Grade 12 Earth and Space Science (SES4U)

Ages 17 to 18

From the 2008 course: observing the sky, the electromagnetic spectrum, orbits, planetary geology, small bodies, and Kepler's and Newton's laws.

ISS Visible Tonight: altitude and azimuth

When the space station passes over your town, to the minute, and where to look.

SES4U · B2.2
Students will

describe a pass of the space station in altitude and azimuth, and explain how these differ from right ascension and declination.

10-minute activity

Take the next pass for your town and write its start, highest and end points as azimuth and altitude. Sketch the path on a sky dome. Why does a satellite's position depend on where you stand, while a star's right ascension and declination do not?

Pick your town

Toronto · Vancouver · Montreal · Calgary

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Space telescopes: other wavelengths

The telescopes working in space, from Hubble to JWST, and what each one is for.

SES4U · B3.3
Students will

match space telescopes to the bands of the electromagnetic spectrum they observe, and explain why some bands can only be seen from space.

10-minute activity

Sort the telescopes on the list by the band they observe: infrared, visible, ultraviolet, X-ray or gamma rays. Shade the bands the Earth's atmosphere blocks. What does that tell you about where each telescope has to be?

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Types of orbits

Low, medium, geostationary and polar orbits, and what each one is used for.

SES4U · C2.1
Students will

use the terms geosynchronous, geostationary, apogee and perigee correctly, and describe the orbits satellites use.

10-minute activity

Compare low, medium and geostationary orbits on the page. Draw an elliptical orbit and label its apogee and perigee. Then use the worksheet to work out how high a geostationary orbit must be, and check it against a real TV satellite.

Mars globe

A real-time 3D globe of Mars.

SES4U · C2.2
Students will

use images and data from spacecraft to describe Mars's geology, such as its volcanoes, canyons and old riverbeds.

10-minute activity

Spin the globe to Olympus Mons and Valles Marineris, both mapped by spacecraft in orbit. What do they suggest about Mars's past: volcanoes, moving crust, water? Compare each with a similar feature on the Earth.

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Near-Earth objects

Asteroids and comets passing close to the Earth.

SES4U · C3.2
Students will

describe the small bodies that orbit the Sun, such as asteroids and comets, and how close some come to the Earth.

10-minute activity

Pick three objects from the list of close approaches. For each, note its size and how close it comes, then give the distance in Earth-Moon distances (about 384,400 km). Which one is most worth watching, and why?

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Satellite directory: Kepler's third law

Orbit details for thousands of satellites: height, period and inclination.

SES4U · C3.7SES4U · C3.8
Students will

use real satellites' heights and periods to test Kepler's third law, and explain the result with Newton's law of gravitation.

10-minute activity

Look up the ISS, a GPS satellite and a geostationary satellite. Add the radius of the Earth (6,371 km) to each height, then plot T2 against r3. Is it a straight line? The worksheet does it for five satellites and finds the mass of the Earth from the slope.

Questions from teachers

What does SNC1W Space Exploration cover?

Strand E of the de-streamed Grade 9 course (2022): the impacts and spin-offs of space exploration, how space technology helps with climate change and disasters, the Sun, how the universe began, comparing bodies in space, distances and units, and sky events seen from the Earth. Every specific expectation has a card on this page.

Which senior courses use these tools?

Grade 12 Earth and Space Science (SES4U), Grade 11 Physics (SPH3U: gravity and weight) and Grade 12 Physics (SPH4U: gravitational fields and satellite orbits).

Is Grade 10 Science included?

Not yet. The Grade 10 academic course (SNC2D) has no space strand: its Earth and space strand is about climate change.

About these codes

These are our suggestions for where each tool fits. Always preview a page before using it with a class: some tools show ads, these school pages do not.

Ontario codes are specific expectations, for example E2.5. BC has no item codes, so BC cards name the course and the curriculum element.

Codes and course names from The Ontario Curriculum (© King's Printer for Ontario) and the BC Curriculum (© Province of British Columbia). Outcomes and activities are our own words. Orbital Radar is not affiliated with or endorsed by either ministry.

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Orbital Radar. (2026, November 4). Space for Schools: Ontario, Grades 9 to 12. Retrieved November 5, 2026, from https://orbitalradar.com/schools/ca/ontario-secondary

“Space for Schools: Ontario, Grades 9 to 12.” Orbital Radar, 4 Nov. 2026, orbitalradar.com/schools/ca/ontario-secondary. Accessed 5 Nov. 2026.

Orbital Radar (2026) Space for Schools: Ontario, Grades 9 to 12. Available at: https://orbitalradar.com/schools/ca/ontario-secondary (Accessed: 5 November 2026).

Orbital Radar. “Space for Schools: Ontario, Grades 9 to 12.” Last modified November 4, 2026. https://orbitalradar.com/schools/ca/ontario-secondary.

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  urldate      = {2026-11-05},
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