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The Base 10 concept comprehension skill in Grade 1 Addition & Subtraction learning refers to understanding that numbers are composed of tens and ones. It is crucial for grasping how to add and subtract single-digit and double-digit numbers, recognizing the value of each digit in a number, and performing operations using the concepts of place value and regrouping.
To test a Grade 1 student's Base 10 concept comprehension, use manipulatives like base-10 blocks. Start with simple counting exercises, then progress to building numbers using different combinations of tens and ones. Observe if the student can correctly assemble and disassemble numbers into tens and ones, and if they can compare and order numbers using base 10 reasoning.
To train Base 10 concept comprehension in Grade 1 students, start by using visual aids such as place value charts and base 10 blocks. Introduce simple addition and subtraction problems within 10, encouraging students to physically manipulate the blocks as they solve the problems.