
Place Value
Tens and Ones

Count it, show it, compare it, order it.
Four short modules help young learners count carefully, see 11 to 20 as ten and some more, compare groups by matching, and put numbers in order. Every module follows the same seven LessonCrest steps, with help that fades as confidence grows. No timed drills.
Covered
What this book covers: counting each object once, numbers 11 to 20 as ten and some more, more / fewer / the same, and putting numbers in order on a number path.
Not covered
Not covered here: adding and taking away (they come in the next books), and any race against the clock.
Before you start, you should be able to
- Look at a small group.
- Tell if two things are the same or different.
- Say some counting numbers.
Things to have
Use real objects such as buttons, pasta or blocks.
Notice
Pictures in this book are simplified learning models. Check answers with the explanations at the back of the book.
Check the skills you need before you begin. If something feels tricky, an adult can help you start in the right place.
Read a short, clear explanation of the new idea and the words that go with it.
Watch the idea being used, one step at a time, in a worked example.
Practice with prompts and help cues. The help gets smaller as you get stronger.
Practice on your own with different kinds of questions, and explain your thinking.
Look back at earlier learning so it stays strong, then check where to go next.
Check your answers. Each answer explains why, names a common mistake, and shows how to fix it.