02 Geo board is an effective tool to teach1. basic geometrical concepts like rays, lines and angles2. geometrical shapes and their properties3. difference between 2-D and 3-D shapes4. concepts of symmetry
03 At primary level use of tangram, dot games, patterns etc., helps the students to1. understand basic operations2. enhance spatial understanding ability3. develop sense of comparing numbers4. strengthen calculation skills
07 Manipulative tools are important for learners at primary level as they help them most to1. speed up mental and oral calculations2. perform better in examination3. understand basic mathematical concepts4. solve word problems
08 Which one of the following manipulative tools is required to develop geometrical concepts of 'symmetry' and 'reflection' in class IV?1. beads string2. dot paper3. abacus4. two sided counter