Grade 3 · Mathematics
Quarter 4 · Week 6 · TEKS
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This Grade 3 mathematics lesson focuses on helping students identify the costs and benefits of planned and unplanned spending decisions, and understand the concept of credit as it relates to borrowing when wants or needs exceed the ability to pay. Grounded in TEKS standards TEKS.MATH.3.09C and TEKS.MATH.3.09D, the lesson integrates personal financial literacy with mathematical process standards to support lifetime financial security. Students will engage in concrete examples, guided practice, and reflection to connect financial concepts to real-life situations.
Students should understand basic addition and subtraction, and have some experience with making choices or decisions involving money or resources.
Planned spending is when you decide ahead of time to buy something or pay for something. For example, saving money to buy a new toy next month is planned spending. Unplanned spending happens when you buy something without planning, like suddenly needing to buy a replacement for a broken item. Understanding the difference helps people make better financial decisions.
Every spending decision has costs and benefits. Costs are what you give up, such as money or time. Benefits are what you gain, like enjoyment or usefulness. For planned spending, costs might include saving money over time and waiting, but benefits include getting exactly what you want. For unplanned spending, costs might be paying more or not having saved money, but benefits include solving an urgent need quickly.
Credit is when you borrow money to buy something because you do not have enough money right now. People use credit when their wants or needs are more than the money they have. It is important to understand that borrowing means you must pay back the money later, usually with extra money called interest. This means borrowing costs more than just the price of the item.
When someone borrows money, they are the borrower, and the person or bank lending the money is the lender. The borrower must pay back the full amount borrowed plus interest. Interest is a fee for borrowing money, so the total repayment is more than the original amount. Understanding this helps people decide when to use credit wisely.
A student wants to buy a new backpack and decides to save money for two months to buy it. What are some costs and benefits of this planned spending?
The cost is the money saved and the waiting time before getting the backpack. The benefit is getting the backpack they want without borrowing money or paying extra fees.
Costs: saving money and waiting; Benefits: getting the desired backpack without debt.
A student's lunchbox breaks suddenly and they need to buy a new one immediately. What are some costs and benefits of this unplanned spending?
The cost might be spending money they did not plan to use or paying more for a quick purchase. The benefit is having a lunchbox to carry food right away.
Costs: unexpected expense, possibly higher price; Benefits: having a lunchbox immediately.
If the student does not have enough money to buy a new bike now, they might borrow money from a family member and agree to pay back a little extra. What is this extra money called and why is it important?
The extra money is called interest. It is important because it is the cost of borrowing money, and the borrower must pay back the original amount plus interest.
Interest; it is the extra money paid for borrowing and must be repaid.
Begin by asking students if they have ever saved money to buy something special or if they have ever had to buy something suddenly without planning. Write their examples on the board.
Share personal experiences about buying something planned or unplanned. Listen and think about differences between these types of spending.
This activity activates prior knowledge and introduces the idea that spending can be planned or unplanned, setting the stage for identifying costs and benefits.
Present two scenarios: one planned spending (saving for a bike) and one unplanned spending (fixing a flat tire). Ask students to list costs and benefits for each.
Work in pairs or small groups to identify costs and benefits for each scenario and share with the class.
This guided practice helps students concretely identify costs (money spent, waiting) and benefits (getting the bike, fixing the tire) in both planned and unplanned spending.
Explain the concept of credit: borrowing money when you don't have enough to pay now. Use simple examples like borrowing money from a friend and paying back more later.
Listen and ask questions about credit and interest. Discuss why someone might need to borrow money.
This phase clarifies that credit is a tool used when immediate payment is not possible, emphasizing the borrower's responsibility to repay with interest.
Provide a short real-world problem where a character uses credit to buy something they want but cannot pay for immediately. Ask students to explain the costs and benefits and the borrower's responsibility.
Work individually or in pairs to analyze the problem and explain the costs, benefits, and credit use.
This activity applies concepts to a realistic situation, reinforcing understanding of planned/unplanned spending and credit.
Ask students to write or explain orally the costs and benefits of a planned and an unplanned spending decision they have made or imagine. Also, ask them to explain what credit is and why it is important to pay it back.
Complete the exit ticket or short assessment demonstrating understanding of costs, benefits, and credit.
This phase checks for student understanding and ability to apply concepts independently.
Work in pairs or small groups to identify costs and benefits for each scenario and share with the class.
What are costs and benefits of planned spending?
Costs include saving money and waiting; benefits include getting what you want without borrowing.
What are costs and benefits of unplanned spending?
Costs include unexpected expenses and possibly paying more; benefits include solving urgent needs quickly.
Why do people use credit?
People use credit when they want or need something but do not have enough money to pay immediately.
What is the borrower's responsibility when using credit?
The borrower must pay back the money borrowed plus interest.
What is interest?
Interest is extra money paid for borrowing money.
Use simple, concrete examples and visuals to explain costs and benefits. Provide sentence starters for explaining credit and repayment. Work in small groups for guided practice.
Use pictures and real objects to illustrate planned and unplanned spending. Use clear, simple language and repeat key vocabulary. Pair ELL students with peers for discussion.
Challenge students to create their own spending scenarios with costs and benefits. Discuss how interest rates can vary and affect repayment. Explore how credit can be used responsibly or irresponsibly.
Encourage students to talk with their family about a recent spending decision and identify the costs and benefits together, discussing whether credit was used and how it was managed.
Students learned to identify the costs and benefits of planned and unplanned spending decisions and understood that credit is used when wants or needs exceed the ability to pay. They also learned that borrowing money means the borrower must pay it back, usually with interest. These concepts help students make informed financial decisions for lifetime security.
Use the exact standards alignment and retrieved-source provenance stored with this enrichment.