Kelli Sheffield Adding and Subtracting Decimals

60 Second Lesson  In the 60 second lesson plan the teacher might indicate that the term zero has several meanings.  Zero means nothing.  ‘’If you have zero candy, you have no candy.’’  Zero is a placeholder when we are writing numbers. In the number 100 the zeros tell us that the number is a LOT more than 1  The teacher can then delete a zero and ask, ‘’What is the number?’’ The number is 10. The zero tells us that it is more than 1 but less that 100.

Understanding Place Value  Before students can understand place value, they must understand numeration.  The students practiced fraction, decimal, and percent. They had to explain place value when picking the decimal card.

Problem Solving Strategy  F ind what you’re solving for.  A sk yourself. ’What are the parts of the problem?’’  S et up the numbers.  T ie down the sign.  D iscover the sign.  R ead the problem.  A nswer or draw a conceptual representation of the problem, using lines, tallies, and check.  W rite the answer.

A honey bee is 0.4 inches long. A bumble bee is 0.75 inches long. How much longer is a bumble bee than a honey bee? F.) 0.71 inches H.) 0.35 inches G.)1.15 inches 0.3 inches

Solution 0.75 inches inches 0.35 inches

The STAAR chart requires the memorization of multiplication facts, and changing a fraction to a decimal.

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