This lesson exposes children to a variety of animals and guides them through observation of animal similarities, differences, and environmental adaptations. This lesson can be used as part of a study of plants and animals. Before doing the lesson, students should know the meanings of the terms plant, animal, and living.

The 11th grade learning experience consists of 7 mostly month-long units aligned to the Common Core State Standards, with available course material for teachers and students easily accessible online. Over the course of the year there is a steady progression in text complexity levels, sophistication of writing tasks, speaking and listening activities, and increased opportunities for independent and collaborative work. Rubrics and student models accompany many writing assignments.Throughout the 11th grade year, in addition to the Common Read texts that the whole class reads together, students each select an Independent Reading book and engage with peers in group Book Talks. Students move from learning the class rituals and routines and genre features of argument writing in Unit 11.1 to learning about narrative and informational genres in Unit 11.2: The American Short Story. Teacher resources provide additional materials to support each unit.

In this short unit, students will spend three lessons exploring the importance of themes and main ideas in fiction and informational texts.  Now would be a good time to have them take an assessment of their reading and writing skills. They'll explore theme through O. Henry's classic short story  "The Gift of the Magi" and consider how this piece compares to the main idea in the article "The Proven Power of Giving, Not Getting."

In this lesson, students will read a famous short story by the author O. Henry and consider how gift giving affects both the giver and the receiver. They’ll learn about aphorisms and create their own bumper sticker.

G2M3: Place Value, Counting, and Comparison of Numbers to 1,000. Contains 41 Lessons.

Grade 1 Module 4: Place Value, Comparison, Addition and Subtraction to 40. Contains 29 Lessons.

Ratios

Type of Unit: Concept

Prior Knowledge

Students should be able to:

Calculate with whole numbers up to 100 using all four operations.
Understand fraction notation and percents and translate among fractions, decimal numbers, and percents.
Interpret and use a number line.
Use tables to solve problems.
Use tape diagrams to solve problems.
Sketch and interpret graphs.
Write and interpret equations.

Lesson Flow

The first part of the unit begins with an exploration activity that focuses on a ratio as a way to compare the amount of egg and the amount of flour in a mixture. The context motivates a specific understanding of the use of, and need for, ratios as a way of making comparisons between quantities. Following this lesson, the usefulness of ratios in comparing quantities is developed in more detail, including a contrast to using subtraction to find differences. Students learn to interpret and express ratios as fractions, as decimal numbers, in a:b form, in words, and as data; they also learn to identify equivalent ratios.

The focus of the middle part of the unit is on the tools used to represent ratio relationships and on simplifying and comparing ratios. Students learn to use tape diagrams first, then double number lines, and finally ratio tables and graphs. As these tools are introduced, students use them in problem-solving contexts to solve ratio problems, including an investigation of glide ratios. Students are asked to make connections and distinctions among these forms of representation throughout these lessons. Students also choose a ratio project in this part of the unit (Lesson 8).

The third and last part of the unit covers understanding percents, including those greater than 100%.

Students have ample opportunities to check, deepen, and apply their understanding of ratios, including percents, with the selection of problems in the Gallery.

This lesson formally introduces and defines a ratio as a way of comparing numbers to one another.Key ConceptsA ratio is defined by the following characteristics:A ratio is a pair of numbers (a:b).Ratios are used to compare two numbers.The value of a ratio a:b is the quotient a ÷ b, or the result of dividing a by b.Other important features of ratios include the following:A ratio does not always tell you the values of quantities being compared.The order of values in a ratio matters.Goals and Learning ObjectivesIntroduce a formal definition of ratio.Use the definition of ratio to solve problems related to comparing quantities.Understand that ratios do not always tell you the values of the quantities being compared.Understand that the order of values in a ratio matters.

Students work with a set of cards showing different ways of expressing ratios numerically. They group the cards showing equivalent ratios and then order the groups from least to greatest value.Key ConceptsIt can be hard to compare the values of ratios represented in different forms (e.g., a:b, decimal, fraction, a to b). Simplifying ratios makes it easier to compare and order their values.Goals and Learning ObjectivesIdentify ratios that are equivalent but expressed differently.Simplify ratios in order to group and order cards efficiently and successfully.

Students use percents greater than 100% to solve problems about rainfall, revenue, snowfall, and school attendance.Key ConceptsPercents greater than 100% are useful in making comparisons between the values of a single quantity at two points in time. When a later value is more than 100% of an earlier value, it means the quantity has increased over time. This percent comparison can be used to find unknown values, whether the earlier or later value is unknown.Goals and Learning ObjectivesUnderstand the meaning of a percent greater than 100% in real-world situations.Use percents greater than 100% to interpret situations and solve problems.

This collection of visualizations was made from Landsat imagery. Many of these visualizations are designed to show changes in our environment through time. Subjects include glacial retreat, urban growth, landforms and coastlines, floods, fires, deforestation, volcanism, and others.

Students to enter and compare numeric or algebraic expressions in this interactive pan balance, from Illuminations, . They can "weigh" the expressions they want to compare by entering them on either side of the balance, allowing them to practice arithmetic and algebraic skills, as well as to investigate the concept of equivalence.

Students will gain knowledge on how to recognize and generate simple equivalent fractions. They will learn the criss cross method of checking to see if their process of elimination is accurate in naming an equivalent fraction. Students will then model equivalent fractions.

This resource is from Tools4NCTeachers. This file contains a set of 6 tasks (including scoring rubric and student recording sheet).  The tasks may be used for instruction or assessment.  Each task focuses on comparing 3-digit numbers, and using symbols (>,<, =) to make comparisons.Remix this resource to include student work samples or addtional tasks.

This resource is from Tools4NCTeachers.  This is a set of ten (10) tasks, which may be used for instruction or assessment.  Each file contains a separate task, rubric, and recording sheets.  The word problems in these tasks focus around making comparisons, where the difference between the two quantities is unknown.  For example, students may find the difference between two measurements or between the two sets of objects.Remix this resource to include extension ideas or addtional tasks.

This resource is part of Tools4NCTeachers.

This file contains representations and strategies for solving comparison problems. These representations help answer the questions, "How many more?" and "How many fewer/less?" This resource is especially useful for making comparisons when analyzing data.

Disease, predation, competition for resources, and poaching doesn't explain the decline of either population after 1975, while a drought led to a steeper decline in population.