Why My High Schooler Struggles to Count Coins (And What We’re Trying At Home)
The self-checkout screen at Kroger blinked 28 seconds left before it reset our transaction, and Javi’s knuckles were white around a fistful of change. We’d stopped on the way home from his orthodontist adjustment, his braces throbbing too bad for the granola bar I had in the car, and he’d insisted on paying for his blue Gatorade and spearmint gum himself. It was cash he’d earned mowing Mrs. Henderson’s lawn that weekend—crumpled five and ten in his hoodie pocket, coins loose in the other, since Mrs. Henderson always pays half in change pulled from the mason jar she keeps on her kitchen counter.
I watched him sort quarters first, stacking them in a little pile on the scanner ledge, then dimes, then pause, holding a nickel and a penny up to the fluorescent light like he was trying to read tiny text on a pill. “Just dump it in the slot,” I said, nodding at the machine. It counts change automatically. He shook his head. “I wanna know how much I have first.” The woman behind us shifted her canvas grocery bag and sighed quiet enough she probably thought we couldn’t hear. Javi dropped a penny on the sticky floor, bent to fish it out from under the cart, and the screen timed out.
We ended up paying with Apple Pay, like we usually do. Walking back to the car, he twisted the cap off his Gatorade and stared at the sidewalk. “I don’t get why that’s so hard for me,” he said. “I can do my trig homework in 20 minutes but I can’t count stupid change.”
That was the first time he said it out loud, but I’d noticed small things for months. The previous fall, he’d helped run his robotics club’s snack stand after school, and come home red-faced saying he’d messed up the cash box count twice, and the other kid running the stand had joked he couldn’t be trusted with a lemonade stand, let alone a club budget. I’d brushed it off at the time. All kids these days grow up on phones and cards, I thought. None of them know how to count cash. But after the Kroger trip, I sat down that night and emailed his algebra II teacher, asking if this was something she saw, or if I should be worried.
Her answer put me at ease more than any of the 10 p.m. Google searches I cycled through, which all jumped straight to dyscalculia and independent living delays and sent me spiraling. She sees three or four kids like Javi every year, she said—kids who do fine, even well, in upper level math, who can budget for a new skate deck and calculate how many lawns they need to mow to afford it, who freeze up when handed a pile of mixed coins.
The gap makes sense, when you trace it back. Javi was in second and third grade, the grades when kids usually learn money skills, when I was working two barista jobs and picking him up from daycare at 6 p.m. I never carried cash. I paid for everything through drive-thrus with my card, he never got handed a dollar for an ice cream truck popsicle and counted his own change while we waited. His elementary school spent two weeks on money with plastic coins and worksheets, he passed the end-of-unit quiz matching each coin to its value, and the class moved on to fractions. No one revisited it after that. Curriculum assumes kids will pick up real-world practice on their own, but most of us don’t use cash enough for that to happen anymore.
It’s not that Javi doesn’t know what each coin is worth. He can tell you a quarter is 25 cents, no problem. What he never built was automaticity: the ability to sort, skip count by 10s and 5s and 25s, and hold the running total in his head all at once, especially when someone’s watching. That working memory load gets heavier with pressure, which is why he can sort slowly at home but freezes up at a register with a line behind him.
We didn’t turn it into a big remedial project, no workbooks or after-school tutoring. Ms. Marquez said the last thing a 10th grader wants is to feel like he’s redoing third grade in front of his friends, so we wove small, low-stakes practice into daily life.
I dumped the old pickle jar we used for loose change, and bought a divided plastic tray from Dollar General for three dollars, labeling each section with a Sharpie: 25, 10, 5, 1. It sits in the silverware drawer, and whenever either of us gets coins as change, we sort them into the right slot when we get home, no fanfare. Most Sundays, when Javi leans against the counter waiting for his ride to the skate park, I ask him to count up how much we have for the laundromat. No timer, no grade, if he loses track halfway through he dumps the coins back and starts over. I don’t correct him mid-count anymore, either. If he lands on a number that seems off, I just say “want to run through that one more time?” instead of jumping in to fix it. I realized when he was little, I always just took change out of his hand and counted it myself when we were rushed, so he never got to work through the slow fumbles that make a skill stick.
When we shop with cash now, we step to the side by the candy rack before we get in line, and count it out there. No rule says you have to fumble with coins while a cashier stares and a line builds. On drives to skate competitions, we play a dumb verbal game that doesn’t feel like homework: I call out a mix, like “six quarters, four dimes, one nickel,” and he calls the total back. We start small, just two or three coins, and add more as it gets easier.
I still asked when this would be a sign of something more, rather than just a missed practice gap. She said if he also struggled with other everyday number tasks—reading an analog clock, calculating a 15% tip, keeping track of how much he’d spent on video game skins in a month, estimating how long a drive would take—that would be worth checking for something like dyscalculia. But Javi does all those things fine. He budgets his lawn money down to the dollar, he can tell me what time it is on the old wall clock in the kitchen, he just needs more repeated practice with coins.
It’s been three months now, and it’s not like he’s fast. Last weekend at the farmers market, he wanted three honey sticks from a beekeeper’s stall, and got halfway through counting a handful of change before he laughed and dumped the whole pile on the counter and asked the vendor to count for him. That felt like progress, actually—he didn’t get embarrassed, didn’t storm off, just asked for help, which is something plenty of full-grown adults do. A week before that, he sold his old complete skateboard to a 7th grader down the street for 25 dollars, counted the mixed bills and change the kid handed him right there on the porch, and got it right on the first try, no check from me.
Last Sunday he rolled ten dollars in quarters all by himself, carried them down to the laundromat in his gym bag, and did his own laundry without asking me for help. He still keeps Apple Pay set up on his phone for days he doesn’t feel like messing with change, and I don’t blame him. Most days, I use it too. It’s not a problem he has to fix all the way, really. It’s just a small gap we’re filling in slowly, one handful of quarters at a time.
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