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Curated OER
Smiling Snake
Students explore the /s/ sound and identify the /s/ sound while reading. They read a tongue twister which emphasizes the /s/ sound and sss like a snake when they come to a /s/ sound. They listen to "The Stray Dog" and make finger...
Clark County School District
Owl Moon by Jane Yolen
A thorough lesson plan takes your first grade class through Jane Yolen's beautiful Owl Moon. It crafts the unit with clear objectives, high-level guiding questions, cloze activities and sentence frames, and extension...
Virginia Department of Education
High School Mathematics Geometry Vocabulary Word Wall Cards
Having a good working knowledge of math vocabulary is especially important for geometry learners. Here are 119 pages worth of wonderfully constructed definitions, constructions, formulas, properties, theorems, and postulates. This is a...
Curated OER
Congruent Segments
The task, should your class decide to take it, is to list a series of reflections that transfer a line segment from one position to another.
Washington State Department of Health
Let's Cook!
Recipes, tasting activities, images of fruits and veggies, fun food facts... you name it, this resource has it! Your class will be cooking up wonderful dishes in no time with these materials. Included here are recipes, handouts,...
Curated OER
Geometry Practice: G.G.28 #1: Congruent Triangles
In this congruent triangles worksheet, students solve four multiple choice problems. Students determine which statement is the appropriate reasoning to say that two triangles are congruent.
Curated OER
When Does SSA Work to Determine Triangle Congruence?
Your learners will make good use of the Socratic method in a collaborative task that begins with an assumed solution and ends with deeper understanding of the idea of determining two triangles congruent.
Mathematics Vision Project
Circles: A Geometric Perspective
Circles are the foundation of many geometric concepts and extensions - a point that is thoroughly driven home in this extensive unit. Fundamental properties of circles are investigated (including sector area, angle measure, and...
Mascil Project
The Pipe Clamp
Clamp onto the resource and don't let go. Future mechanical engineers produce a pipe clamp from a sheet of metal. This idea is to use the pipe clamp to affix a pull-up bar in a doorway.
EngageNY
Congruence Criteria for Triangles—AAS and HL
How can you prove it? Guide classes through an exploration of two possible triangle congruence criteria: AAS and HL. Learners connect this criteria to those previous learned and also explore criteria that does not work. The lesson...
Curated OER
Chopping Cubes
Middle schoolers work in small groups to make various geometric solids with Play-Doh. They use fishing line to make cuts and observe the shapes of the cross-sections. Pupils complete an assessment in which they answer questions such as:...
Curated OER
Around the Clock
Students discover the relationship between the circumference of a circle and its diameter. They find the length of an arc of a circle.Students use estimation strategies in real-world applications to predict results (i.e., interpolation...
Pingry School
The Alchemist's Dream – Copper into "Gold"
Many scientists attempted alchemy for hundreds of years before a full understanding of metals became clear. Scholars take a penny and, through two different chemical reactions, make it appear to turn into silver and later gold. They...
Curated OER
Area of Circles and Probability
Students investigate the area of squares and circles. In this geometry lesson, students calculate the area and probability of simple events. They work on a laptop using Safari.
Curated OER
Phoneme Substitution (With Letters)
Get pre-readers comfortable with phoneme substitution using these helpful letter cards, which are printable in three different sizes depending on your classroom needs. Once scholars understand some letter sounds, they can begin...
Curated OER
Phoneme Substitution, Harder (With Letters)
Emergent readers create new words by changing a phoneme, using sets of letter cards to spell out each CVC word. They begin by substituting initial sounds, then final sounds, and lastly the middle vowel. Help them sound out each word,...
Curated OER
Reintroduce /x/
What words end with /x/? Unite several alphabet concepts as scholars learn all about the letter x. After identifying it, they listen to you pronounce the /x/ sound and try it themselves (use these tips to explain how you do this)....
Curated OER
Finding the Area of an Equilateral Triangle
The problem seems simple: find the area of the equilateral triangle whose sides are each length 1. In fact, this same problem is solved in 8th grade, addressing a different Common Core standard, using the formula for area of a triangle...
Curated OER
Composition in Journals
Carlos Fuentes’s The Diary of Frida Kahlo: An Intimate Self-Portrait and Jaspre Bark’s Journal of Inventions: Leondardo da Vince serve as models for an assignment that asks class members to create a personal journal they will use...
Curated OER
Why Does ASA Work?
Your geometry learners explore Angle-Side-Angle congruence in this collaborative task. The sum of the interior angles of all triangles being one hundred eighty degrees, is the key learners will discover as they explain their reasoning...
Mathematics Vision Project
Module 6: Congruence, Construction, and Proof
Trace the links between a variety of math concepts in this far-reaching unit. Ideas that seem very different on the outset (like the distance formula and rigid transformations) come together in very natural and logical ways. This...
Illustrative Mathematics
Similar Triangles
Proving triangles are similar is often an exercise in applying one of the many theorems young geometers memorize, like the AA similarity criteria. But proving that the criteria themselves are valid from basic principles is a great...
Jesuit High School
Geometry Sample Problems
I'd like to prove that this worksheet has a lot to offer. Seven problems using triangles and parallelograms practice the traditional method of a two-column proof. After the worksheet is some practice problems that show worked out...
Mt. San Antonio Collage
Congruent Triangles Applications
Triangles are all about threes, and practicing proving postulates is a great way to get started. The first page of the worksheet provides a brief introduction of the different properties and postulates. The remaining pages contain...
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