2018.09.29.
2018年9月29日
Make a subtraction board game with 10 problems (as on p85). Maximum of 2 problems with digits. 3 subtraction problem poems (p83). 5 subtraction word problems (p84).
2018年9月29日
Make a subtraction board game with 10 problems (as on p85). Maximum of 2 problems with digits. 3 subtraction problem poems (p83). 5 subtraction word problems (p84).