Math Games

Grade 2 - Patterns and Relations

Standard 2.PR.3 - Use the data in the table to answer the question in the story.

Included Skills:

Demonstrate understanding of equality and inequality concretely and pictorially (0 to 100) by:
• relating equality and inequality to balance
• comparing sets
• recording equalities with an equal sign
• recording inequalities with a not equal sign
• solving problems involving equality and inequality.
• Compare two quantities of the same object (same shape and mass) by using a balance scale to determine if the quantities are equal or not.
• Construct two unequal sets using identical objects and verify orally and concretely that the sets are not equal.
• Analyze the impact of changing one of two equal sets upon the equality of the two sets.
• Analyze the impact of making changes (equal and unequal) to both of two equal sets upon the equality of the sets.
• Analyze and sort sets according to equality and explain the reasoning.
• Model two number expressions to determine if the expressions are equal (=) or not equal (≠) and write a number sentence to show the relationship (e.g., 3 + 2 and 4 + 1 are both equal to 5, so the two expressions are = and I write 3 + 2 = 4 + 1; 7 - 5 and 3 are not the same quantity, so I write 7 - 5 ≠ 3).
• Create statements of equality and non-equality and model the statements to verify the relationship.