Theme 1.  Addition and subtraction of number 6

In the theme you learn:
• You will learn how to add and subtract 6 using a number line;
• You will learn to calculate expressions with adding and subtracting 6;
• You will practice finding true equalities;
• You will improve your skills in solving problems to find the sum, the remainder, and to compare numbers;
• You will find unknown parts and results of addition and subtraction.