Singapore Math: Grade 3a Unit 1 (part 2)

[ScifiAngel74]

Thank you..this has been helpful.

Just purchased Singapore Math 3A and 3B today.

[gocaca]

this is good way to think about this but it does have its drawbacks with negative numbers now imagine this a student thinks about marbles then he hears of a number like -20

how will he/she think about -20 marbles in a can? kinda defies logic,(just some food for thought and perhaps not related to the syllabus ur teaching)

[vpletap]

@gocaca How about having to owe 20 marbles from a can to someone?