Curated OER
2000 U.S. National Chemistry Olympiad National Exam - Part I
The National Chemistry Olympiad exams are comprehensive tests covering an entire year of chemistry concepts. You can use them as practice for competing in the challenge, or simply as a review, or as an actual final exam for your...
Curated OER
2008 U.S. National Chemistry Olympiad Part III
In this chemistry olympiad lab learning exercise, chemists are required to design two experiments. In one, they design an experiment to identify seven solutions given to them in pipettes. In the other, they design an experiment to...
Curated OER
Context Clues II Pretest
In this ESL context clues worksheet, students choose the answer that best defines a word that is given within the context of a sentence.
Curated OER
How Can we Measure the Rate of a Chemical Reaction?
Learners examine different types of chemical reactions. They explore how alcohol molecules affect the reaction rates. They answer discussion questions to end the lesson.
Curated OER
Tracking a Hurricane
Students use knowledge of what satellite imagery tells to create a descriptive hypothesis of the ground phenomenon during a hurricane.
Math Slice
Math Slice: Time Slice Special Test
A concise tool for assessing time concepts such as telling time and elapsed time using analog clocks. Assessment is scored online and scores are compared with scores of all test takers. Great for use as a quick assessment.
Shodor Education Foundation
Shodor Interactivate: Lesson: Elapsed Time
In this lesson students will understand the concept of elapsed time and be able to calculate elapsed time given the starting and ending time.
Math Drills
Math Drills: Time and Clock Worksheets
Download these free worksheets to sharpen your time skills. Sheets focus on elapsed time, telling time on analog clocks, calendars, and converting time.
CK-12 Foundation
Ck 12: Elem Math: Elapsed Time in a Sequence of Events Word Problems
[Free Registration/Login may be required to access all resource tools.] In this learning module, students must solve multi-step word problems by calculating a specified amount of elapsed time in a series of events. Includes video...
PBS
Pbs Learning Media: Figuring Out Elapsed Time
In this video segment from Cyberchase, through addition and regrouping in base sixty, Matt helps Digit figure out what time his CyberSouffle will be done.
Shodor Education Foundation
Shodor Interactivate: Elapsed Time
Students can practice determining elapsed time when given a start time and an end time. They can switch between digital and analog clocks.
Alabama Learning Exchange
Alex: Calculating Elapsed Time With Time Rulers
Young scholars will explore their prior knowledge of time, discuss fractional parts of an hour, and use a specialized time ruler to calculate elapsed time for real life situations.
Shodor Education Foundation
Shodor Interactivate: Elapsed Time Two
Students practice finding the ending time given the starting time and an elapsed time.
Better Lesson
Better Lesson: It All Adds Up With Time
The students are working on the concept of adding and subtracting time along with developing their own strategies to figure out elapsed time.
CK-12 Foundation
Ck 12: Elem Math: Determining Duration Time One Step With Timeline
[Free Registration/Login may be required to access all resource tools.] In this learning module, students are asked to solve one-step word problems involving elapsed time by reading a timeline. Includes video demonstrating a sample...
Khan Academy
Khan Academy: Telling Time Word Problems
In this exercise, students practice telling time word problems. Students receive immediate feedback and have the opportunity to get step-by-step elapsed time hints and try questions repeatedly. CCSS.Math.Content.3.MD.A.1 Tell and write...
CK-12 Foundation
Ck 12: Elem Math: Ending Time in 5 Minute Intervals Word Problems
[Free Registration/Login may be required to access all resource tools.] In this learning module, students must solve multi-step word problems involving elapsed time, and starting and ending times. Includes video demonstrating a sample...
CK-12 Foundation
Ck 12: Elem Math: Telling the Time Before and After
[Free Registration/Login may be required to access all resource tools.] A practice quiz where students must answer questions about elapsed time.
Alabama Learning Exchange
Alex: My Time!
A instructional activity designed to review telling time, record keeping, and calculating elapsed time.
CK-12 Foundation
Ck 12: Elem Math: Identifying Hourly Time Change
[Free Registration/Login may be required to access all resource tools.] Students attempt practice problems on identifying hourly time changes.
CK-12 Foundation
Ck 12: Elem Math: Determining Time Changes in 5 Minute Intervals
[Free Registration/Login may be required to access all resource tools.] Students watch a video and attempt practice problems on determining time in five minute intervals.
CK-12 Foundation
Ck 12: Elem Math: Determining Duration of Time One Step
[Free Registration/Login may be required to access all resource tools.] For this learning module, students solve word problems involving time written in 24-hour format. Includes video demonstrating a sample problem [0:38] and a set of...
CK-12 Foundation
Ck 12: Elementary Math: Difference Between Two Time Intervals
[Free Registration/Login may be required to access all resource tools.] Students compare the times on two clocks and calculate what time it will be before or after a given time interval, which clock shows an earlier or later time, etc....
CK-12 Foundation
Ck 12: Measurement: Addition and Subtraction With Time
[Free Registration/Login may be required to access all resource tools.] Find sums and differences of measurements of time by converting units.