5.NBT.A.2: Explain patterns in the number of zeroes of the product when multiplying a number by powers of 10, and explain patterns in the placement of the decimal point when a decimal is multiplied or divided by a power of 10.

5.NBT.B.7: Add, subtract, multiply, and divide decimals to the hundredths place.

1. solve long division problems that have up to four digit dividends and two-digit divisors.

2. solve long divisions that have dividends and divisors that are decimals.

3. know and explain the steps (e.g. divide, multiply, subtract, and bring down) they must take to find their quotient.

4. understand what dividends, divisors, and quotients are in a division problem.

5. check and justify their quotient from solving the division problems.

Additionally, each lesson will have activities for the students to engage in. Lesson 1's group activity will have a debriefing period for the students to share with the class what steps they had placed in order for the division process. Lesson 2's "mystery picture" math game gives feedback to the students on what division problems they had gotten incorrect. Lesson 3's decimal placement exercise will be split into two parts with a review period for students to correct their work as they watch me demonstrate how I set up each decimal division problem. Prior to starting these assessments, I will be teaching them how each division process is to be completed, step-by-step. For all of these activities, I will also be walking around the room to offer help and feedback to all of the students.

A formal assessment will be administered after all three lessons have been taught. This will be a cumulative test that will test the what the student's have learned in this math unit with dividing two digit divisors and decimals. This test will cont towards the students' grade for the trimester.

The next lesson will require students to divide with divisors outside of multiples of ten. These divisors will have values other than zero in their ones place value. Since students know that they must consider dividing two digits first of the dividends by the two digit divisors, they will learn to use multiples of the divisors now to estimate the digits in their quotient. This can also be done through estimation or multiplication.

The last lesson will incorporate decimals into the long division problems. This lesson will teach students that they must move the decimal point of the divisor first to the right first so that it will become a whole number. Then, the students must move the decimal point of the dividend to the right the same amount of times as the divisor before undergoing dividing. Students can then use their prior knowledge from the last two lessons to finish the division problems now that the divisor is a two-digit whole number.

Lesson 2 will have an activity incorporating the use of technology for students with a Mystery Picture game on Google Spreadsheets. This game will require students to complete the division problems to reveal a picture once they find all of the quotients.

Lesson 3 will utilize a computer sorting game where the students must learn to move the decimal point of the divisors and dividends in their division problems. This practice will help them understand how to convert decimal divisors and dividends into whole numbers before dividing and where to place their decimal in their quotient.