Section 1
📘 Elapsed Time Problems
New Concept
Elapsed time is the difference between two points in time.
What’s next
Next, you'll use this concept to solve problems by finding the time that passes between a start and an end time.
In this Grade 4 lesson from Saxon Math Intermediate 4, students learn to read analog clocks using the hour and minute scales, write time in digital form using a.m. and p.m. notation, and express time in words such as "half past," "quarter after," and "quarter to." The lesson also introduces elapsed time, teaching students to calculate the difference between two points in time by counting hours and minutes separately and then adding them together.
Section 1
📘 Elapsed Time Problems
Elapsed time is the difference between two points in time.
Next, you'll use this concept to solve problems by finding the time that passes between a start and an end time.
Section 2
Digital Form
To write the time of day, we write the hour followed by a colon. Then we write two digits to show the number of minutes after the hour. We use the abbreviations a.m. for the 12 hours before noon and p.m. for the 12 hours after noon.
Think of digital form as the universal code for time! The numbers before the colon pinpoint the hour, while the two digits after tell you the exact minute. Using 'a.m.' signals morning adventures before noon, and 'p.m.' marks all your fun from noon until midnight. It’s the clearest way to avoid showing up late!
Section 3
Elapsed time
Elapsed time is the difference between two points in time.
Ever wonder how long a movie really is or how much time you have to finish your homework? That's elapsed time! It’s just a cool way of saying 'how much time has passed' from a start point to an end point. You just count the full hours first, then add up the remaining minutes to get your answer.
Section 4
Reading Math
We can write or say the time in different ways:
•
• 43 minutes after
• 17 minutes to
Time is a master of disguise! The same moment can be described in multiple ways, like saying '' or 'a quarter to 9.' Knowing these different phrases is like being fluent in the secret languages of a clock. It helps you understand what anyone means, no matter how they say it, and makes you a true time wizard.
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Expand to review the lesson summary and core properties.
Section 1
📘 Elapsed Time Problems
Elapsed time is the difference between two points in time.
Next, you'll use this concept to solve problems by finding the time that passes between a start and an end time.
Section 2
Digital Form
To write the time of day, we write the hour followed by a colon. Then we write two digits to show the number of minutes after the hour. We use the abbreviations a.m. for the 12 hours before noon and p.m. for the 12 hours after noon.
Think of digital form as the universal code for time! The numbers before the colon pinpoint the hour, while the two digits after tell you the exact minute. Using 'a.m.' signals morning adventures before noon, and 'p.m.' marks all your fun from noon until midnight. It’s the clearest way to avoid showing up late!
Section 3
Elapsed time
Elapsed time is the difference between two points in time.
Ever wonder how long a movie really is or how much time you have to finish your homework? That's elapsed time! It’s just a cool way of saying 'how much time has passed' from a start point to an end point. You just count the full hours first, then add up the remaining minutes to get your answer.
Section 4
Reading Math
We can write or say the time in different ways:
•
• 43 minutes after
• 17 minutes to
Time is a master of disguise! The same moment can be described in multiple ways, like saying '' or 'a quarter to 9.' Knowing these different phrases is like being fluent in the secret languages of a clock. It helps you understand what anyone means, no matter how they say it, and makes you a true time wizard.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter