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Math bar / Educational product

Math bar

Concept
This is a corn-shaped math product where children learn four basic arithmetic operations by rotating numbers. The correct answer (○,△) can be found on the display.
Background
In 2020, as the COVID-19 pandemic spread around the world, most students are not taking classes at school. Many children left school after failing to meet the minimum proficiency standards of basic mathematics.

University

Mokwon University

Mokwon University
Daejeon, South Korea

Heo Jun Gyeong,
Mokwon University