LEARN NC

K–12 teaching and learning · from the UNC School of Education

Goal 1

Number and Operations - The learner will read, write, model, and compute with non-negative rational numbers.

Objective 1.05

Develop flexibility in solving problems by selecting strategies and using mental computation, estimation, calculators or computers, and paper and pencil.

Resources aligned to this objective

Resources on the web

Eggsactly with a dozen eggs
In this lesson, one of a multi-part unit from Illuminations, students are given the opportunity to examine fractions as part of a set. (Learn more)
Format: lesson plan (grade 3–4 Mathematics)
Provided by: National Council of Teachers of Mathematics
Comparison estimator
This activity allows the user to compare two quantities (which may be the number of objects in each of two sets, the lengths of two curves, or the area of two shapes) by estimating. (Learn more)
Format: activity/lesson plan (grade K–12 Mathematics)
Provided by: Shodor
Collecting the rays
In this lesson, from Illuminations, students explore how variations in solar collectors affect the energy absorbed. They make rectangular prisms that have the same volume but different linear dimensions. (Learn more)
Format: lesson plan (grade 3 Mathematics and Science)
Provided by: National Council of Teachers of Mathematics
The clucking chicken
In this lesson, students choose meals from a sample menu, construct a box plot and use the data to find the mean, mode, median, and range of the data set. (Learn more)
Format: lesson plan (grade 4–5 Mathematics)
Provided by: National Council of Teachers of Mathematics
Class attributes
In this lesson, one of a multi-part unit from Illuminations, students create their own classroom survey or use the reproducible classroom Survey handout to study the class and describe the set (class) in fractional parts. (Learn more)
Format: lesson plan (grade 3–5 Mathematics)
Provided by: National Council of Teachers of Mathematics
A brownie bake
This lesson, one of a multi-part unit from Illuminations, focuses on student organization, preparation, and presentation of some simple foods as a way to apply various mathematical concepts, with problem-solving techniques being a central theme. (Learn more)
Format: lesson plan (grade 3–5 Mathematics)
Provided by: National Council of Teachers of Mathematics
Balance beam discoveries
This lesson, one of a multi-part unit from Illuminations, encourages students to explore two models of multiplication: the balance beam and the inverse of multiplication. (Learn more)
Format: lesson plan (grade 3–4 Mathematics)
Provided by: National Council of Teachers of Mathematics
Bag the beans
Students work with manipulatives (beans) to create and solve math problems, some of which have more than one correct answer. (Learn more)
Format: lesson plan (grade 3–4 Mathematics)
Provided by: American Association for the Advancement of Science
Another look at the set model using attribute pieces
In this lesson, one of a multi-part unit from Illuminations, students work with sets in which the objects look different based on the idea that objects in the set are not the same size and shape. Students also use fractions to describe a set of attribute pieces. (Learn more)
Format: lesson plan (grade 3–5 Mathematics)
Provided by: National Council of Teachers of Mathematics