Curriculum

Children will learn to order three objects based on their length and compare the lengths of two objects indirectly by using a third object as a reference.

Children will learn to express the length of an object using a whole number of uniform length units by aligning multiple copies of a shorter object end to end along the longer object.

Children will learn to measure both vertical and horizontal lengths using non-standard units such as finger lengths, paper clips, and strides from their feet and paces. For example, they can measure the height of a desk vertically in an up-down direction or position to understand upright measurements. This practice helps them grasp basic concepts of measurement and spatial awareness using relatable, everyday items.

Children will be able to compare the numbers of objects in two different groups. They will compare numbers and understand the concepts of greater than, less than, and equal to.

Children will learn to mentally calculate 10 more or 10 less than any given two-digit number without needing to count each increment. They will understand and explain the reasoning behind adjusting the tens place while keeping the ones place unchanged to quickly find the result.

Children will learn to use addition and subtraction within 20 to solve word problems that involve various scenarios such as adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions. They will utilize strategies like drawing, using concrete objects, or equations to illustrate and solve these problems.

Children will learn to solve word problems that involve the addition of three whole numbers, with the total sum being less than or equal to 20. They will use various methods like objects, drawings, and equations with symbols for the unknown numbers to represent and solve the problem effectively.

Children will learn to apply properties of operations as strategies for adding and subtracting. For example, if they know that 8 + 3 = 11, they can also understand that 3 + 8 = 11 due to the commutative property of addition, which states that the order in which numbers are added does not change the sum.

Children will learn to understand subtraction as an unknown-addend problem. For example, to solve 10 - 8, they can find the number that, when added to 8, equals 10. This approach helps them grasp the relationship between addition and subtraction by identifying the missing number that completes the equation.

Children will develop the ability to add and subtract within 20, while demonstrating fluency and speed for addition and subtraction within 10. This skill involves using efficient, accurate, and flexible methods for calculating sums and differences.