a b = __ – Ex: Part-part-whole part unknown a b = __ – Ex: Comparison difference unknown a b = __ – Ex: Comparison smaller part unknown a b = __ – Ex: Solve mathematical and real-world problem situations with the change unknown. One-step problems Connection between information in the problem and problem type Connection between solution strategies for similar problem types Addition change unknown a + __ = c Can be solved as c a = __ – Ex: Part-part-whole part unknown a + __ = c Can be solved as c a = __ – Ex: Comparison difference unknown a + __ = c Can be solved as c a = __ – Ex: Subtraction change unknown a __ = c – Can be solved as c a = __ –
a – b = __ Ex: Part-part-whole part unknown a – b = __ Ex: Comparison difference unknown a – b = __ Ex: Comparison smaller part unknown a – b = __ Ex: Solve mathematical and real-world problem situations with the change unknown. One-step problems Connection between information in the problem and problem type Connection between solution strategies for similar problem types Addition change unknown a + __ = c Can be solved as c – a = __ Ex: Part-part-whole part unknown a + __ = c Can be solved as c – a = __ Ex: Comparison difference unknown a + __ = c Can be solved as c – a = __ Ex: Subtraction change unknown a – __ = c Can be solved as c – a = __