Take away objects from a given group of up to 9 items and state the number remaining.
Subtract a smaller number from a larger number, where the larger number is not more than 18.
Check their subtraction answers to confirm accuracy using simple methods.
Connection to
Lesson summary
This topic introduces Primary 1 learners to the fundamental concept of subtraction. Subtraction is a crucial basic operation in mathematics that involves 'taking away' a certain quantity from another, finding the difference, or determining how much is left. It is an essential skill that learners will encounter and use daily in various real-life scenarios within the Nigerian context, such as managing pocket money, sharing items with siblings, or calculating remaining food items. Mastery of subtraction at this foundational level prepares learners for more complex mathematical operations.
Teacher activity
Guides pupils to group a particular set of objects e.g. or ange in to 1, 2, 3, 4, 5, 6, 7, 8, and
Leads pupils to take a group of objects and take away a lesser number of the same objects from the group e.g. in a group of 8 or anges take away 6 or anges.
Guides pupils to group a particular object e.g. been seeds in to sets of 18, 17, 16, 15, 14, 14, 12, 11, 10, 9,
Guides/leads pupils to count a group of objects and take away a lesser number of the same objects from the group e.g. in a group of 16 bean seeds take away 10 bean seeds.
Evaluation guide
A. Formative Assessment (Ongoing throughout the lesson):
Observation: The teacher observes students as they manipulate objects, draw, and engage in group activities. Look for understanding of the "take away" concept and correct application of methods.
Questioning: Ask direct questions during activities (e.g., "How did you get that answer?", "Show me how you took away 3 from 7").
Mini Whiteboards/Slates: Students quickly write answers to simple subtraction problems on slates/mini whiteboards and hold them up for quick checks.
