I drew a number line with chalk up to 20, and had Alexandra skip jump it by twos, threes, fours and fives and perform simple addition and subtraction to increase her familiarity with its purpose and number sense and a part of place value instruction. Number lines are great way to bridge the gap between concrete (like base 10 blocks on which we've been working) and abstract (numbers only) place value understanding. This is reinforcing the concept that whatever the numbers are added, the sum remains the same. Alexandra demonstrated and practiced her ability to count to hundred by tens, understands that each number counted is one bigger than the previous numbers and which group has more and which has less. Her counting and cardinality number sense continues to be strengthened by practicing the standards through various activities using manipulatives. I challenged Alexandra to find objects in the pre-K classroom that represent different numbers or shapes, and she enjoyed moving object training her attention on the challenge. We played math bingo against one another and finished our session doing a pattern activity using cut apples dipped in paint. Fun activities were explored to strengthen our number skills and end our fun Friday.