The development of math student worksheet through learning interactive videos based on problem-solving to improve numerical literacy.

The development of world education today does not only include the invasion of technological devices into the classroom, but new skills such as literacy and numeracy also have a role in changing education in the 21st century. Numeration or numeracy literacy is the earliest known literacy in the history of human civilization. Both are classified as functional literacy and are very useful in everyday life. Problem solving approach can be applied to prepare students to have knowledge and skills that are closely related to understanding numbers, symbols and quantitative information analysis to be applied in everyday life. This Problem Solving is suitable to be trained to students using Mathematics Student Worksheet. The aims of this study were: (1) to develop theoretically valid Problem Solving-based Mathematics Student Worksheets, and (2) to determine the effectiveness of the Mathematics Student Worksheets developed to improve numeracy literacy. This study uses the ADDIE development model (Analysis, Design, Development, Implementation and evaluation. The results of this study indicate that problem solving Mathematics Student Worksheets are: (1) theoretically valid according to the validator with very good criteria and very feasible to use, (2) effective to improve students' numeracy. [ABSTRACT FROM AUTHOR]