Students use mathematical ideas and procedures to communicate, reason, and solve problems.
Draw logical conclusions and explain the thinking processes used in solving problems. Communicate the meanings of number, space, change, data, and measurement using words, pictures, physical materials, and symbols. Select, apply, and justify appropriate mathematical procedures to solve real-life problems using whole numbers and simple fractions. Listen to, read about, write about, and speak about mathematical ideas and procedures. Select, apply, and justify appropriate mathematical procedures to solve real-life problems using rational numbers.