छात्र त्रिविमीय (3D) आकृतियों के पेपर नेट बनाते हैं और गणना करने से पहले विमाओं को बदलकर आयतन में होने वाले परिवर्तनों का पूर्वानुमान लगाते हैं। यह शिक्षण दृष्टिकोण मुख्य रूप से क्या प्रदान करता है?

A mathematics teacher of Class II gives the following word problem on addition to the students: 'A bag contains 4 mangoes and 6 more mangoes are put into it. How many mangoes are there in the bag in total?' This type of word problem belongs to which of the following structures of addition?

A teacher wrote the number 308 on the blackboard and asked the children to read it aloud. A child said, 'It is thirty-eight.' Which of the following is the most appropriate strategy to rectify the error made by the child?