Yonjuu: Build Math Confidence Through Play

This video provides a step-by-step tutorial for my math game, Yonjuu. I created it to transform abstract concepts into a tangible, strategic card game that strengthens number sense and logical reasoning for learners of all ages.

A short video demonstrating how to use Yonjuu cards to visualize multiplication. Instead of memorizing tables, learners can see '4 times 3' as four groups of three, building deep conceptual understanding.

This video explains how to use Yonjuu cards for addition and subtraction with numbers greater than five. The 'make a ten' strategy shown here is a powerful mental math technique that the visual cards help to solidify.

A glowing recommendation for Yonjuu from mathematician Dr. James Tanton. It's an honor to have my game recognized for its ability to build a strong foundation in arithmetic through fun and fluency practice.

A close-up of the Yonjuu game box and cards. I designed the packaging and cards to be tactile and visually appealing, making the learning experience enjoyable from the moment you open the box.

A video of a child using Yonjuu cards to learn 'partners of 5' (number combinations that add up to 5). This foundational skill is crucial for developing number sense and fluency in addition and subtraction.

A video showing a child using popsicle sticks to practice counting and bundling in groups of ten. This hands-on activity complements the use of Yonjuu cards to build a concrete understanding of place value.

A video of a child practicing math fact fluency by making pairs of numbers that add up to five using Yonjuu cards. Consistent, playful practice is key to mastery.

A video demonstrating a more advanced addition task with Yonjuu cards. Here, we move beyond simple pairs to adding multiple cards by visualizing and regrouping, a key step towards mental math proficiency.