Here are some new mathcasts created with a SMART notebook recorder. The topic was geometry..identifying missing angle measurements in triangles and quadrilaterals.

5NS.1.1 Estimate, round, and manipulate very large (e.g., millions) and very small (e.g., thousandths) numbers.

5NS.1.2 Interpret percents as a part of a hundred; find decimal and percent equivalents for common fractions and explain why they represent the same value; compute a given percent of a whole number.

See part iii.

5NS.1.3 Understand and compute positive integer powers of nonnegative integers; compute examples as repeated multiplication.

5NS.1.5 Identify and represent on a number line decimals, fractions, mixed numbers, and positive and negative integers.

5NS.2.3 Solve simple problems, including ones arising in concrete situations, involving the addition and subtraction of fractions and mixed numbers (like and unlike denominators of 20 or less), and express answers in the simplest form.

5NS.2.5 Compute and perform simple multiplication and division of fractions and apply these procedures to solving problems.

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