11. Write any three objectives of teaching Mathematics at Primary level, 12. What is the Socio-Cultural background of mathematical knowledge? 13. Give three merits of Play-Way method. 14. Draw the Indian place value chart and represent the number 58308 . 15. Add \( 2.342,3.04 \) and 8.2 . 16. Divide 0.245 by 6 . 17. Define Scalene triangle, Isosceles triangle and Equilateral triangle. 18. What do you mean by comprehensiveness of evaluation? 19. Mention any three purposes of evaluation. 20. Give a list of three tools and three techniques of evaluation in Mathematics.

11. **Objectives of Teaching Mathematics at Primary Level**: - Develop basic mathematical skills. - Enhance problem-solving abilities. - Foster a positive attitude towards mathematics. 12. **Socio-Cultural Background of Mathematical Knowledge**: - Influences from social and cultural contexts shape the development and understanding of math concepts. 13. **Merits of Play-Way Method**: - Engages and motivates students. - Promotes holistic development. - Encourages active learning. 14. **Indian Place Value Chart and Representation of 58308**: - **Chart**: ``` Crores | Lakhs | Thousands | Hundreds | Tens | Units ----------------------------------------------------- 0 | 0 | 5 | 8 | 3 | 0 | 8 ``` - **Number Representation**: 5 in Thousands, 8 in Hundreds, 3 in Tens, 0 in Units. 15. **Addition of 2.342, 3.04, and 8.2**: - Total: 13.582 16. **Division of 0.245 by 6**: - Result: Approximately 0.0408 17. **Definitions of Triangles**: - **Scalene Triangle**: All sides and angles are different. - **Isosceles Triangle**: At least two sides are equal, with equal angles opposite those sides. - **Equilateral Triangle**: All sides and angles are equal, each measuring 60 degrees. 18. **Comprehensiveness of Evaluation**: - Thorough and inclusive assessment of all aspects of student learning and development. 19. **Purposes of Evaluation**: - Assessing learning outcomes. - Providing feedback to students. - Informing teaching strategies. 20. **Tools and Techniques of Evaluation in Mathematics**: - **Tools**: - Quizzes and tests. - Projects. - Portfolios. - **Techniques**: - Observation. - Self-assessment. - Peer assessment.