Virginia SOL Math / Grade 1 / Number & Number Sense
Halves & Fourths
What you'll learn
- Split shapes into two and four equal parts
- Name the parts as halves and fourths
- Know that more equal parts means smaller parts
Words to know
- Whole —
- one full shape or object
- Equal parts —
- parts that are the same size
- Half —
- one of two equal parts
- Fourth —
- one of four equal parts
- Fair share —
- an equal part for everyone
Why it matters Splitting into equal parts lets you share food or toys fairly, so everyone gets the same amount.
Worked examples
Model ItI do
Split a circle into two equal parts. What is each part called?
Draw one straight line across the middle so both parts match. The two equal parts are the same size. Each part is called a half.
Try It TogetherWe do
A square is cut into four equal parts. What is each part called?
Four equal parts of one whole are called fourths. Each part is one fourth of the square. Four fourths make the whole square.
Now YouYou do
Are the pieces halves if one piece is big and one is small?
Think about whether the two parts are the same size. Check your answer in the back of this chapter.
Practice
Mastered 0 of 11
Warm-up
Ease in with the basics.
1.How many equal parts make one whole when you cut it into halves?
2.One of two equal parts is called a ___.
3.One of four equal parts is called a ___.
On Level
The core Quick Check from the book.
1.How many equal parts are in halves?
2.How many equal parts are in fourths?
3.Two friends share one sandwich fairly. What is each part called?
4.Which part is bigger: a half or a fourth of the same shape?
5.How many fourths make one whole?
Challenge
Stretch your thinking.
1.A pizza is cut into fourths. If you eat one fourth, how many fourths are left?
2.You want to give more people a piece from the same cake. Should you cut it into halves or fourths to get smaller pieces?
3.A square is folded into two equal parts. How many of those halves make the whole square?