When you wear a wool sweater, have you ever stopped to wonder what animal was wearing it before you? How about how many sweaters that animal could make? Read on to do the sweater sums!
It’s a big job to knit a sweater, not to mention a sweater that teaches math. But Sondra Eklund has done just that with her super-colorful, stripey prime factorization cardigan. Forget using a calculator – all she needs to do is look down at her sleeves to do the math!