New Unit

Our new unit is all about measuring area and perimeter!!

Here are the TEKS:

4.5 Algebraic reasoning. The student applies mathematical process standards to develop concepts of expressions and equations. The student is expected to:

4.5C use models to determine the formulas for the perimeter of a rectangle (l + w + l + w or 2l + 2w), including the special form for perimeter of a square (4s) and the area of a rectangle (l x w);

4.5D solve problems related to perimeter and area of rectangles where dimensions are whole numbers. R

Here are the essential questions:

Why can a mathematical formula work for determining perimeter and area for all rectangles?

How can you use formulas to find the perimeter of a rectangle?

How can you use formulas to find the area of a rectangle?

Here's the youtube video I'm showing the kiddos.