## Unit 6 Division; Map Reference Frames; Measures of Angles

Recognizing Student Achievement

Student’s are making adequate progress if they can demonstrate the following:

axis - either of the two number lines that intersect to form a coordinate grid.

Student’s are making adequate progress if they can demonstrate the following:

- write number models to represent number stories
- solve open sentences using multiplication and division facts
- solve division problems and number stories with 1-digit divisors and 2-digit dividends
- solve decimal addition and subtraction problems
- create a bar graph
- draw angles less than or greater than 90º
- identify places in decimals and the values of the digits in those place values
- use a coordinate grid system
- solve multidigit multiplication stories
- solve problems involving the division of multidigit whole numbers by 1-digit divisors

**Vocabulary****acute angle**- an angle measuring less than 90º**angle**- a figure formed by two rays or line segments that share a common endpoint. The rays or segments are called sides. The shared endpoint is called the vertex.axis - either of the two number lines that intersect to form a coordinate grid.

**clockwise**-moving in the same direction as the hands of a clock

**counterclockwise**- moving in the opposite direction as the hands of a clock

**degree (º)**- a unit of measure for angles based on dividing a circle into 360 equal parts

**dividend**- the number in division that is being divided. For example, in 35 ÷ 5 = 7, the dividend is 35

**divisor**- in division, the number that divides another number. For example, in 35 ÷ 5 = 7, the divisor is 5

**map scale**- a tool that helps you estimate real distances between places shown on a map

**mixed number**- a number that is written using both a whole number and a fraction

**obtuse angle**- an angle measuring more than 90º and less than 180º

**ordered number pair**- two numbers used to locate a point on a rectangular coordinate grid

**partial quotient method**- a way to divide in which the the dividend is divided in a series of steps. The quotients for each step (called partial quotients) are added to give the final answer.

Click here to see an example worked out.

**quotient**- the answer to a division problem

**reflex angle**- an angle measuring more than 180º but less than 360º. Sometimes thought of as the “outside” of an angle.

**remainder**- an amount left over when one number is divided by another number

**right angle**- an angle measuring 90º

**straight angle**- an angle measuring 180º

**vertex (of an angle)**- the point where two sides of an angle, or polygon, meet