This task acts as a bridge between understanding place value and using strategies based on place value for addition and subtraction.

Students will explore the concept of two-digit numbers by moving their bodies to represent either the tens or ones place. They will use their bodies to compare 2 two-digit numbers, using the symbols <,=,> to compare different values.

This lesson unit is intended to help sixth grade teachers assess how well students are able to: Analyze a realistic situation mathematically; construct sight lines to decide which areas of a room are visible or hidden from a camera; find and compare areas of triangles and quadrilaterals; and calculate and compare percentages and/or fractions of areas.

The purpose of this task is to extend students' understanding of fraction comparison.

This lesson is about evaluating numerical expressions, and it was designed for adult learners who are preparing to take their High School Equivalency tests. This course will help the students evaluate numerical expressions correctly by following the correct order of operations, which includes the four basic arithmetical operations and the use of exponents and grouping symbols.

Organic Chemistry research involves the synthesis of organic molecules and the study of their reaction paths, interactions, and applications. Advanced interests include diverse topics such as the development of new synthetic methods for the assembly of complex organic molecules and polymeric materials, organometallic catalysis, organocatalysis, the synthesis of natural and non-natural products with unique biological and physical properties, structure and mechanistic analysis, natural product biosynthesis, theoretical chemistry and molecular modeling, diversity-oriented synthesis, and carbohydrate synthesis.

This challenging problem and brainteaser gives students an opportunity to compose and decompose polygons to make rectangles.

Students listen to the story Ox-Cart Man in which a father and his family use various resources to produce goods. As you read the story aloud to the students, place special emphasis on identifying both how it takes resources to make goods and who buys the goods in a market. Students will then participate in a simulation of the circular flow of the economy. They will use examples from the story to apply the concepts learned and model how the circular flow shows the interdependence between people and businesses in the resource and goods/services markets.

Film study of historical fiction film, Pad Man: a fictionalized account of the quest of a real-life social entrepreneur from India who ultimately used the engineering design process to reverse-engineer series of mini-machines to manufacture affordable sanitary pads for women.

This is a great resource by PBS Kids. It is an interactive comic book of "So Funny I Forgot to Laugh" about Arthur and his friends. Arthur teases a friend about a new sweater, but goes to far. She asks him to stop and he doesn't, so she tells the teacher. The teacher tells him to write an apology and he writes a terrible apology that makes his friends even more upset with him. The story has multiple endings so students can try out different decisions. Goes well with the definition of bullying and what to do if you are being bullied...or if someone accuses you of bullying. Could also be used with understanding that people might exhibit bullying behavior but that doesn't define who they are "A Bully" for life.

The point of this task is to emphasize the grouping structure of the base-ten number system, and in particular the crucial fact that 10 tens make 1 hundred.

Using published writers' texts and students' own writing, this unit explores emotions that are associated with the artful and deliberate use of commas, semicolons, colons, and exclamation points (end-stop marks of punctuation).

This resource contains integrated tasks, assessments, and skill building exercises to continually push language learning forward. In these integrated examples, the content of the the text is the vehicle that drives skill development; it simultaneously deepens our understanding of the world around us.

Students apply several methods developed to identify and interpret patterns to the identification of fingerprints. They look at their classmates' fingerprints, snowflakes, and "spectral fingerprints" of elements. They learn to identify each image as unique, yet part of a group containing recognizable similarities.

In this video segment from Cyberchase, a plant expert shows Bianca the patterns and symmetry found in nature.

The goal of this task is to look for structure and identify patterns and then try to find the mathematical explanation for this. This problem examines the ''checkerboard'' pattern of even and odd numbers in a single digit multiplication table.

This task provides a context where it is appropriate for students to subtract fractions with a common denominator; it could be used for either assessment or instructional purposes.

This word problem requires students to use addition and subtraction and think about money.