Number Frame is a digital mathematical tool / resource that is available free online.
Number Frames helps learners structure numbers to 5, 10, 20, 100. It is used to count, compare, represent and compute with numbers. It is a support that is used to represent mathematical problems or concepts that need visual representation.
While the teacher may use the online tool to teach the concept, the learners can use the physical tool alongside to work hands on and develop their mathematical understanding.