[fullwidth background_color=”” background_image=”” background_parallax=”none” enable_mobile=”no” parallax_speed=”0.3″ background_repeat=”no-repeat” background_position=”left top” video_url=”” video_aspect_ratio=”16:9″ video_webm=”” video_mp4=”” video_ogv=”” video_preview_image=”” overlay_color=”” overlay_opacity=”0.5″ video_mute=”yes” video_loop=”yes” fade=”no” border_size=”0px” border_color=”” border_style=”” padding_top=”20″ padding_bottom=”20″ padding_left=”0″ padding_right=”0″ hundred_percent=”no” equal_height_columns=”no” hide_on_mobile=”no” menu_anchor=”” class=”” id=””][fusion_text]

## Solve problems involving duration, including using 12- and 24-hour time within a single time zone (ACMMG199)

[/fusion_text][fusion_text]LO:To solve problems involving duration

Know:

• what are the units of time
• what the sequential order of time
• how to calculate elapsed time
• 12-hour and 24-hour time
• how to read the time in an analog clock

Understand:

• that time progresses in a logical fashion.

Do:

• I can solve problems involving duration and elapsed time..

[/fusion_text][/fullwidth][fullwidth background_color=”” background_image=”” background_parallax=”none” enable_mobile=”no” parallax_speed=”0.3″ background_repeat=”no-repeat” background_position=”left top” video_url=”” video_aspect_ratio=”16:9″ video_webm=”” video_mp4=”” video_ogv=”” video_preview_image=”” overlay_color=”” overlay_opacity=”0.5″ video_mute=”yes” video_loop=”yes” fade=”no” border_size=”0px” border_color=”” border_style=”” padding_top=”20″ padding_bottom=”20″ padding_left=”0″ padding_right=”0″ hundred_percent=”no” equal_height_columns=”no” hide_on_mobile=”no” menu_anchor=”” class=”” id=””][title size=”2″ content_align=”left” style_type=”none” sep_color=”” margin_top=”” margin_bottom=”” class=”” id=””]Calculating Elapsed time[/title][fusion_text]
The easiest way to calculate elapsed time is to look at 2 time periods.

• starting time
• finishing time

[/fusion_text][separator style_type=”none” top_margin=”” bottom_margin=”” sep_color=”” border_size=”” icon=”” icon_circle=”” icon_circle_color=”” width=”” alignment=”” class=”” id=””][fusion_text]An easy way to calculate elapsed time is to use a timeline.

If you use the hopping method it should help you calculate the duration of tasks.

• hop the hours first
• then hop the minutes

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