Students are continuing to work with numbers 0-20. By the end of the unit, students are currently learning the following CA Content Standards in math...
1.0 Students understand the relationship between numbers and quantities (i.e., that a set of objects has the same number of objects in different situations regardless of its position or arrangement):
1.1 Compare two or more sets of objects (up to ten objects in each group) and identify which set is equal to, more than, or less than the other.
1.2 Count, recognize, represent, name, and order a number of objects (up to 20).
1.3 Know that the larger numbers are made of smaller numbers.
1.2 Count, recognize, represent, name, and order a number of objects (up to 20).
1.3 Know that the larger numbers are made of smaller numbers.
It is also our goal for students to see patterns in our number system and the 100 chart (i.e., number order, 7 and 10 more is 17, 7 and 20 more is 27...)
Standard 1.3, Know that larger numbers are made of smaller numbers, is a precursor to addition and subtraction. You can help your child become more ready for addition and subtraction by describing groups or numbers in terms of parts and a whole. For example: At the store, we are buying 10 apples (the whole). 6 are green (that is one part) and the other 4 are red (the other part). You may even challenge your student with problems such as, "We need to buy 10 apples, I have 6 green apples, how many more do I need to make 10?"
Students recently did a project where they explored how a number can be made of many different combinations of smaller numbers. Each student was assigned a number, and had to create a design using only that number of shapes. The then had to explain to the class how their picture showed their number and tell which smaller numbers were grouped together to make the bigger one.
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