Grade 1Glossary
- a fourth
- Unit 7 Lesson 10
One piece of a shape split into 4 pieces that are the same size.
A fourth, or a quarter, of the square is shaded.
- a half
- Unit 7 Lesson 10
One piece of a shape split into 2 pieces that are the same size.
A half of the rectangle is shaded.
- category
- Unit 1 Lesson 7
A label that tells how objects in a group are alike.
- data
- Unit 1 Lesson 9
Information about the things or people in a group.
Example: If you have a box of colored pencils, then the lengths and colors of each of the pencils are data about the pencils in the box.
- difference
- Unit 1 Lesson 5
The result when one number is subtracted from another.
- estimate
- Unit 4 Lesson 2
-
To find a value that is close to the correct value.
- fourths
- Unit 7 Lesson 9
The pieces created when a shape is split into 4 pieces that are the same size.
The circle is split into fourths, or quarters.
- greater than
- Unit 4 Lesson 14, Unit 4 Lesson 17
63 is greater than 32.
63 > 32- halves
- Unit 7 Lesson 9
The pieces created when a shape is split into 2 pieces that are the same size.
The circle is split into halves.
- length
- Unit 6 Lesson 5
The measure of how long an object is in same-sized units with no gaps or overlaps.
Example: The length of this sneaker is 15 cubes long.
- less
- Unit 4 Lesson 14, Unit 4 Lesson 17
- o’clock
- Unit 7 Lesson 13, Unit 7 Lesson 14
The clock shows 2 o’clock or 2:00.
- sum
- Unit 1 Lesson 2
The total when two or more numbers are added.
- survey
- Unit 1 Lesson 9
A way to collect data using a group of people answering the same question.
- teen number
- Unit 3 Lesson 8
A number with 1 ten and between 1 and 9 ones.
Example:
Fifteen is 1 ten and 5 ones.
- two-digit number
- Unit 4 Lesson 7
