Grade 3 Ontario Curriculum
How ClassCents supports Grade 3 students in meeting Ontario Curriculum expectations through engaging classroom economy activities.
Subject
Standards
Activities
Aligned
Mathematics Expectations
Every expectation below pairs with classroom economy activities you can run this week.
Mathematics
6 standards
read, represent, compose, and decompose whole numbers up to and including 1000, using a variety of tools and strategies, and describe various ways they are used in everyday life
ClassCents Connection
By Grade 3, balances and savings goals reach three digits, so place value gets practiced on numbers students personally own — their balance, their goal, and the gap between them.
Activities
- Model your balance with base-ten blocks and record it as hundreds + tens + ones.
- Decompose a savings target: break a 250-point reward price into place-value parts and identify which part you’ve already saved.
- Everyday-number hunt: connect three-digit ClassCents amounts to real-life examples of the same numbers (prices, distances, attendance).
round whole numbers to the nearest ten or hundred, in various contexts
ClassCents Connection
Rounding earns its keep when planning a purchase: “I have about 180, the reward is about 200, so I need roughly 20 more.” The exact numbers are always available in ClassCents to check the estimate.
Activities
- Round your balance to the nearest ten and hundred, then compute how far it sits from a chosen store price.
- Bundle estimate: round the prices of three small rewards, estimate the total, then calculate exactly and compare.
- Round-and-plan: estimate how many paydays until a rounded goal is reached, then verify with exact arithmetic.
use mental math strategies, including estimation, to add and subtract whole numbers that add up to no more than 1000, and explain the strategies used
ClassCents Connection
Growing balances mean mental math with bigger, still-personal numbers. Students compute payday totals and post-purchase balances in their heads, then use the app as the answer key.
Activities
- Payday prediction: mentally add this week’s expected job earnings to your balance and check when payday posts.
- Friendly-numbers practice: subtract a store price like 199 by treating it as 200, explaining the compensation step.
- Strategy journal: after each mental calculation, record which strategy was used and whether the app confirmed it.
represent multiplication of numbers up to 10 × 10 and division up to 100 ÷ 10, using a variety of tools and drawings, including arrays
ClassCents Connection
Job rates and bulk store purchases are natural arrays: a job paying 5 per day over 6 days, or 4 items at 8 points each, both draw themselves.
Activities
- Array the week: draw a 5 × 6 array for a job paying 5 points across 6 days, then confirm the total at payday.
- Bulk-buy arrays: sketch the array for buying 4 identical store items at 8 points each before making the purchase.
- Fair share: divide a 60-point class bonus among 10 students with counters, then watch the teacher award each share.
display sets of data, using many-to-one correspondence, in pictographs and bar graphs with proper sources, titles, and labels, and appropriate scales
ClassCents Connection
Class economy totals are now big enough to need scale — one symbol for five points is a decision students must make and justify about their own data.
Activities
- Scaled pictograph of weekly class earnings where each icon represents 5 points, with the class justifying the scale choice.
- Bar graph of the most-redeemed rewards this month, built from the store’s purchase tally.
- Rescale challenge: redraw the same earnings graph with a different scale and discuss which version communicates better.
estimate and calculate the change required for various simple cash transactions involving whole-dollar amounts and amounts of less than one dollar
ClassCents Connection
The reward store is a cash-register simulation with real stakes: students estimate change before the purchase and calculate it exactly, matching what happens to their balance.
Activities
- Cashier role-play: one student runs the store table with play money, making change for whole-dollar purchases while the buyer checks the math.
- Estimate-then-verify: before each purchase, estimate the balance remaining; after, compare with the exact figure in the transaction history.
- Change puzzles: “You pay for a 65¢ item with a loonie — what change should you get?” using play coins to prove it.
Implementation Strategies
Practical strategies for implementing ClassCents with Grade 3 students to maximize curriculum alignment.
Push Into Three Digits
Grade 3 number work reaches 1000 — let savings goals get ambitious.
- Stock at least one reward priced in the hundreds
- Decompose balances and goals by place value regularly
- Round before every purchase as a habit
Rates That Draw Arrays
Per-day salaries and bulk prices make multiplication visible.
- Use clean daily rates (up to 10) for job salaries
- Encourage multi-item purchases for array practice
- Divide class bonuses that split evenly among 10
Make Change a Ritual
The Grade 3 FL expectation is exactly what a class store does.
- Run a cashier station with play money on store day
- Estimate change first, calculate second, verify third
- Rotate the cashier job so everyone practices
Introduce Scale Honestly
Many-to-one graphs need data big enough to deserve them.
- Graph class-level (not just personal) totals
- Let students pick and defend the scale
- Redraw one graph at two scales and compare
Ready to Implement Grade 3 Standards?
Start building your classroom economy and watch your Grade 3 students develop foundational skills through curriculum-aligned activities.