Maths · Key Stage 1 Year 1
Year 1 Number and Place Value
Count forwards and backwards to 100, show numbers in different ways, and say which of two amounts is more.
About this topic
This course builds the number sense that the rest of Year 1 Maths rests on. It starts with counting forwards and backwards from any given number, because the fixed order of the number system is what every later lesson depends on. Reading and writing number words comes next, then counting in twos, fives and tens, so equal groups are in place before one more and one less arrive. From there the course moves from spoken counting to seeing quantities, first with objects, ten frames and dots, then on a number line. Comparing two amounts is left until last, because a child who can count on, count back and read a number line has everything needed to say which of two groups holds more. Each lesson teaches one method clearly, then puts it to work on a familiar problem such as socks, coins, a bus or grapes on a plate. Each lesson also names the mistake children usually make at that point, with the wrong version and the right version set side by side, so the error is met and corrected rather than repeated. Every lesson ends with a short quiz answered entirely by tapping, and the course finishes with a final test and one spoken assignment recorded at home in about ten minutes.
What you will learn
- Count forwards to and across 100 from any given number.
- Count backwards from any given number without starting again at one.
- Cross correctly into a new ten when counting on.
- Read numbers to 100 written as numerals.
- Write numbers to 20 in words.
- Count in twos from any starting number.
- Count in fives and tens.
- State one more than a given number.
- State one less than a given number.
- Represent a number using objects such as counters, buttons or a ten frame.
- Represent a number as a picture, including dots and fingers.
- Find a given number on a number line.
- Jump forwards and backwards along a number line.
- Compare two quantities using the words more than and less than.
- Identify which of three quantities is the most and which is the least.
Vocabulary
Words to know
You will meet these words in this topic. Press the speaker to hear one. Inside a lesson you can tap any word to hear it and see what it means.
Words this topic teaches
- step
One part of what you do.
- order
Put things in a line from small to big.
- hundred
It is one more than ninety nine.
- numeral
The sign for a number.
- pair
Two things that go together.
- group
A group is some things together.
- pence
Pence means small British coins.
- opposite
It is very different to something.
- objects
Things you can touch.
- counters
Small things for counting.
- frame
A box to hold things.
- dice
A small cube with dots.
- less
It means not as many.
- amount
How much there is.
Other words in these lessons
- change
Money you get back after paying.
- cross
Feeling a bit angry.
- both
It means two together.
- chunk
Part of a word or thing.
- birthday
The day you were born.
- fast
To do something quickly.
- loud
Big sound. Not quiet.
- read
To say words from a book.
- pile
A pile is things in a heap.
- floor
The floor is what you walk on.
- fingers
Fingers are on your hand.
- using
It means you do something with it.
- check
Check means to see if it is right.
- stop
You do not go on.
- neat
Straight and tidy.
- right
Side your right hand is on.
- plate
A flat thing for food.
- full
Say the whole word, not part.
- row
Things in a straight line.
- means
Tells us what it is.
- agree
Both say the same thing.
Lessons
- 1How Do We Count Forwards and Backwards to 100?Free to try
- 2How Do We Read and Write Numbers to 20 in Words? Locked
- 3How Do We Count in Twos, Fives and Tens? Locked
- 4What Is One More and One Less Than a Number? Locked
- 5How Do We Show Numbers with Objects and Pictures? Locked
- 6How Do We Use a Number Line to Find a Number? Locked
- 7Which Number Is More and Which Is Less? Locked