STANDARDS
CCSS: 3.MD.A.1, MP2, MP5, MP6
TEKS: 3.7C, 4.8C
ELAPSED TIME
Home-Learning Successes!
When school doors closed, online classrooms opened
JLN Photography/Shutterstock (Jordan Louis)
Jordan Louis, a third-grader in Miramar, Florida, completes schoolwork online.
Starting this past winter, a new illness called COVID-19 sickened people around the globe. In more than 190 countries, schools closed to slow the spread of the virus that causes the disease. When DynaMath went to press, it was unclear when and where schools would reopen.
But learning didn’t stop! Students completed lessons at home, often online.
Courtesy of family
Kameryn Diaz starts a school day at her home in New York.
It wasn’t easy. In many homes, families shared one device. Some families didn’t have access to a computer or the internet at all. Whether students were video chatting or writing in paper packets, everyone could agree that school wasn’t the same.
“I miss that I can’t actually talk to my friends and be there with them,” said Kameryn Diaz, a fourth-grader from New York City.
But students found ways to make remote learning work for them. They chatted with friends at the start of online class meetings. They followed daily schedules and found special spaces to do schoolwork.
Teachers worked hard to make their remote classrooms feel like school. Chauntae Brown, a second-grade teacher at P.S. 80 in New York City, used supplies from her garage to create a colorful video chat background.
“It’s important to have a bit of fun in times like this,” she says.
After just a few weeks, students discovered how
“My students had no remote learning experience,” Brown said. “I’m proud of their eagerness to learn by any means necessary.”
What to Do
Elapsed time is the amount of time between the start and end of an event. You can use a number line to help you find the time that has passed.
Example
In March, Ms. Brown’s class schedule included a Spanish lesson. The lesson started at 11:50 a.m. It ended at 12:45 p.m. How much time did Ms. Brown spend teaching Spanish?
• Draw a number line and label the first tick mark with the start time.
• Draw an arrow to hop forward to the next friendly time on the number line. Write down how much time you moved.
• Continue hopping forward in increments of minutes or hours until you reach the end time.
• Add together the increments of time to find the total.
10 minutes + 45 minutes = 55 minutes
Ms. Brown spent 55 minutes teaching Spanish.
Now You Try It
Use your knowledge of
According to Ms. Brown’s schedule, how long did students spend in story talk? Show using a number line.
Which time period is longer: writing or lunch? By how many minutes?
Ms. Brown sometimes adds an extra 40 minutes after math for some fun math activities. At what time do the extra math activities end?
Not including lunch, how long do Ms. Brown’s students spend in class on an average day?
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