Today is International Day of Mathematics, often known as Pi Day. It’s a day that celebrates the ideas and patterns that help us understand the world around us.

Wales has played its part in shaping the language of mathematics. In the sixteenth century, Robert Recorde, born in Tenby, introduced the equals sign (=), explaining that he chose two parallel lines because “no two things can be more equal.” A century later, William Jones, from Anglesey, helped popularise the symbol π, now recognised everywhere as the ratio of a circle’s circumference to its diameter.

Those ideas travelled far beyond Wales. But mathematics is not only about famous discoveries or symbols. In adult learning, mathematics is often something much more practical: confidence with numbers in everyday life.

Across Wales, Adult Learning Wales delivers courses that help adults build numeracy skills in ways that connect directly to daily life. Through Essential Skills Wales – Application of Number, learners develop practical skills such as budgeting, understanding information and data, and working with measurements and quantities. Numeracy also appears across many other areas of learning: in digital skills classes through spreadsheets and graphs; in sewing or craft through measuring and pattern work; and in cookery through quantities, proportions and adapting recipes.

One learner I met recently brought home to me why this work matters so much.

He was in his sixties and attending a numeracy class. At first, he was reluctant to engage. He had carried a long-standing worry about maths and came in with a level of resistance that will feel familiar to many adults who have had difficult experiences of learning earlier in life. But with the steady support and encouragement of our superb tutors and support staff, something changed in him. He moved from reluctance to participation and then from participation to enjoyment.

During the session, he talked about something many of us take for granted: calculating the change you should receive when paying for groceries in cash. For years, he had struggled with it, and it had affected his confidence and everyday choices. In that class, he finally mastered the concept, and he was genuinely elated. What might seem like a small step was life-changing for him. It turned a routine moment at the till into something he could do with confidence and independence.

International Day of Mathematics gives us a chance to celebrate the discoveries that shaped the subject. But it is also an opportunity to recognise the learners who take that brave first step, and the tutors and support teams who create the conditions for confidence to grow.

Sometimes, the most important equation is not written on a page at all; it is the moment when learning adds up to new confidence and new possibilities.

Kathryn Robson, Chief Executive