In this unit, students are introduced to ratios, rates, proportional reasoning, similarity and congruence. Students explore ratio as a comparison of two quantities. They discover that if the ratio between the corresponding side lengths and angle measures of two figures is 1:1 (i.e., the measures are identical), then the geometric figures are congruent. They learn that for two figures to be similar, their corresponding side lengths must be in proportion and their corresponding angles must be congruent. Students also explore the relationship between congruence and similarity, learning that al
The Student Mathematician’s Journal allows students to explore simulated or real-life problems and help them to think, write, and read like mathematicians. It encourages students to reflect on what they have learned in each lesson, think deeply about mathematics, and communicate in writing on worksheets.
In this unit, students begin their exploration of probability as a measurement of the
Illustrative Mathematics K-5 MathTM is an IM Certified product providing trusted, highly rated Putting it All Together materials to ensure students thrive in mathematics. Each Illustrative Mathematics lesson has four phases, from pre-unit practice modules to cool downs, focusing students’ attention on definitions, notations, and graphical conventions contributing to the development of real numbers.
The big ideas in grade 2 include: extending understanding of the base-ten number system, building fluency with addition and subtraction, using standard units of mea