Illustrative Mathematics
Placing a Square Root on the Number Line
There are many ways to approach finding the rational approximation of an unknown square root. Here is a problem that will help math learners make a connection between square roots and their order on a number line. As usual, determine two...
Curated OER
Introduce Vocabulary: My Chinatown: One Year in Poems (Mak)
Beautiful illustrations and tender memories of cultural identity make Kam Mak's story My Chinatown an ideal resource for budding readers learning four vocabulary words in context: fortune, scraps, soar, and victory. Introduce these...
Curated OER
Introduce Vocabulary: One Hungry Monster (O'Keefe)
Combine counting and vocabulary practice with Susan O'Keefe's engaging story One Hungry Monster, which you can find on YouTube if needed. Introduce learners to the following in-text words: doubt, gargle, rude, swear, and underneath....
Curated OER
Introduce Vocabulary: One Tiny Turtle (Davies)
The loggerhead turtle is a fascinating species, and budding readers learn all about it in Nicola Davies' account One Tiny Turtle. This informational narrative offers excellent vocabulary in context, and you'll find guidance here to...
American Chemical Society
Using Chemical Change to Identify an Unknown
If you discover an unknown powder, how do you determine if it is safe? Lesson uses four different tests to identify the properties of various powders that appear the same. Then scholars get an unknown powder and have to determine which...
Illustrative Mathematics
Dividing by One-Half
Understanding when to divide by two or one-half can be confusing. Here is an activity that gives four different scenarios. It is up to your number crunchers to decide if they divide by two or one-half. The easiest way to approach the...
Curated OER
Unknown Addends (to 20): Count the Blank Boxes
By filling in the blank squares, learners complete five addition number sentences both visually and numerically. For each problem, a frame is filled with a certain number of images (turkeys, candles, etc.) and a certain number of blank...
EngageNY
True and False Number Sentences
True or false? Scholars determine the truth value of equations and inequalities through substitution. All values to use for substitution are given with each equation or inequality. This is the 24th lesson in a module of 36.
EngageNY
One-Step Problems in the Real World
Mirror, mirror on the wall, which is the fairest resource of them all? Individuals write and solve one-step equations for problems about angle measurement, including those involving mirrors. Both mathematical and real-world problems are...
Novelinks
Walk Two Moons: List-Group-Label
Use a vocabulary asssignment as a quick activity between reading chapters of Walk Two Moons by Sharon Creech. Young readers choose their favorite words from the vocabulary word list to describe Sal, Phoebe, or any other character from...
Curated OER
Book Title: Ten Flashing Fireflies
This lesson plan engages learners in a variety of activities to build 1 to 1 correspondence, estimation, and problem solving skills. They discuss problem solving strategies, hear the story Ten Flashing Fireflies, compose their own word...
Curated OER
Two-Step Equations with Decimals
In this two-step equation worksheet, students use two-steps to solve for the unknown. Problems involving using addition, subtraction addition, and multiplication. This worksheet contains 18 problems and does contain an answer key.
American Chemical Society
Using Dissolving to Identify an Unknown
There is a solvent called aqua regis that can dissolve gold! After observing a solubility demonstration, groups receive four known crystals and one unknown. Based on the demo, they design an experiment to determine the identity of the...
EngageNY
Unknown Angles
How do you solve an equation like trigonometry? Learners apply their understanding of trigonometric ratios to find unknown angles in right triangles. They learn the meaning of arcsine, arccosine, and arctangent. Problems include basic...
Chemistry Collective
Virtual Lab: Unknown Acid and Base Problem
Looking for an easy way to give your class experience with acid-base chemistry outside the lab? Try a detailed interactive that puts them in total control! Young chemists determine the dissociation constant and concentration of an...
Pingry School
Qualitative Analysis of Eleven Household Chemicals
Chemical and physical properties give compounds an identity. Learners use the identity of a compound to predict what it is. By performing different tests like solubility, flame, heat, and reactions, individuals attempt to identify an...
American Chemical Society
Using Chemical Change to Identify an Unknown
If you have taught the first lesson in this mini unit, learners already know that cabbage juice and vinegar cause chemical changes in some materials. Now, they get a chance to use them to compare the liquids' reactions to five known and...
Curated OER
The Five Senses
Study various objects and help kindergarteners use their five senses to classify the objects. They are presented with various objects and then use their five senses to sort and classify the objects. Then they use a Visual Ranking Tool to...
Math Worksheets Land
Division and Finding Unknown Factors - Matching Worksheet
Explore the relationship between math operations with seven multiplication and division sentences, each of which is missing a number. The answer is missing for some, and factors, divisors, and dividends for others. Once these are...
Curated OER
Subtraction and Unknown Addends
Using images helps budding mathematicians grasp difficult subtraction concepts. For this set of three word problems, they examine sets of objects which are reflected in each scenario. To approach subtraction in a more accessible way, the...
Curated OER
Subtraction and Unknown Addends
A brief addition word problem has learners searching for the missing addend. They read about Mr. George, who already has five gallons of fuel in his car. Knowing the car can hold eleven gallons, they compute how many gallons he needs....
Curated OER
Unknown Numbers in Sums and Differences
Your new mathematicians may think word problems sound scary, but this introductory set of scenarios will leave them feeling accomplished in their addition and subtraction skills! Learners read seven word problems, each requiring them to...
Math Worksheets Land
Division and Finding Unknown Factors - Step--by-Step Lesson
Because this division word problem has the answer explained on the same page, use it as an all-class warm up. Covering up the bottom half, have scholars determine the missing factor in a multiplication sentence. They use an image to...
Curated OER
Unknown Numbers in Sums and Differences
Beginners to addition and subtraction will have fun with these three word problems, which have accompanying visuals. They complete one problem with a missing difference, one with a missing sum, and a third with a missing subtrahend....