Welcome Back
I hope all of you had a Wonderful Fall Break and are ready to get back into the school groove.
This week in math we will be gaining more experienced with measurement and estimation using different units and tools, students further develop their skills by learning to round in Topic C (3.NBT.1). We will measure, and then use place value understandings and the number line as tools to round two-, three-, and four-digit measurements to the nearest ten or hundred.
We will then apply our previous understanding to use estimations to test the reasonableness of sums and differences precisely calculated using standard algorithms. From their work with metric measurement students have a deeper understanding of the composition and decomposition of units. They bring this to every step of the addition and subtraction algorithms with two- and three-digit numbers as 10 units are changed for 1 unit or 1 unit is changed for 10 units. We will then begin problem solving involving metric units or intervals of time. Students will round to estimate, and then calculate precisely using the standard algorithm to add or subtract two- and three-digit measurements given in the same units (3.NBT.1, 3.NBT.2, 3.MD.1, 3.MD.2).