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# Hot Dots® Flash Cards - More Subtraction (Facts 10-19)

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Product Number: TB21360

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With the power of Hot Dots® technology, ordinary flash cards are transformed into individualized basic skills tutors. Use like regular flash cards, or add the Hot Dots® pen and students can drill independently with Hot Dots® instant reinforcement! Students touch the pen on the correct answer and get a positive response. The plastic storage case also makes these great send-home helpers.

CCSS Product Alignment

1.OA.1 Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

1.OA.6 Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on, making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14), decomposing a number leading to a ten (e.g., 13 = 4 = 13 = 3 = 1 = 10 = 1 = 9), using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 = 8 = 4), and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).

2.OA.2 Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.

2.NBT.5 Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

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 Item Weight: 0.63 Assembly Required: false Prop 65:

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