ISBN-13: 9781489706874 / Angielski / Twarda / 2016 / 42 str.
ISBN-13: 9781489706874 / Angielski / Twarda / 2016 / 42 str.
Operations with integers can be a pitfall for many mathematics students from sixth grade on to the college level. This story presents adding and subtracting positive and negative numbers in a way that students can easily manipulate in a concrete manner to visualize the answer. This model could contribute to getting better grades in prealgebra through upper courses.