Level 4-5 is divided into three activity sections: number theory, fractions, and geometry activities. Each section begins with an Anchor Activity followed by five or six further explorations and extensions that are connected in some way to the Anchor.
Notable Numbers focuses on number theory including factors and multiples, prime and composite numbers, and abundant, deficient, and perf
OpenSciEd High School addresses all high school NGSS standards. This comprehensive science curriculum empowers students to question, design, investigate, and solve the world around them.
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