Zenbaki-lerroa: eragiketak
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Gaiak
- Operations
- Zenbaki-lerroa
- Osoak
Deskribapena
Explore operations with integers using an authentic context of net worth, then generalize with a number line. Experiment with adding and subtracting both positives and negatives, and make predictions about whether the total will be positive or negative.
Ikaskuntzaren oinarrizko helburuak
- Represent addition and subtraction of integers on a horizontal number line
- Reason about addition and subtraction of integers in terms of number-locations
- Use logical necessity to reason that addition has the opposite effect as subtraction or that adding (or subtracting) a negative integer has the opposite effect as adding (or subtracting) a positive integer.
- Recognize and generate equivalence classes of integer sums and differences
- Show that a number and its additive inverse (opposite) have a sum of 0
- Using a net worth context, describe situations that have a positive sum or difference, negative sum or difference, and zero sum or difference
- View adding a negative as equivalent to subtracting a positive, and explain why this relationship makes sense in contexts such as net worth.
- View subtracting a negative as equivalent to adding a positive, and explain why this relationship makes sense in contexts such as net worth.
- Apply a number line model for addition and subtraction to new contexts.
Ohizko alineamenduak
Common Core - Math
Irakasleentzako tresnak
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Irakasle-gidak (pdf) PhET taldeak sortutako tresnak ditu. ( PDF ). |
Irakasleak bidalitako jarduerak
Integer Addition and Subtraction Assessment | Gillian Walker | MS (LH) HS (BH) |
Lab EL Urruneko |
Matematika |
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