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• UT.MATH.1.OA.6 - Add and subtract within 20.
• UT.MATH.1.OA.6 - Add and subtract within 20.
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This lesson reviews 1st Grade math concepts of addition, subtraction, telling time to the hour, and making 10. It is designed as a "Choose Your Own Adventure" form that links students to hyperdocs for each topic.Image Attribution

Subject:
Mathematics
Material Type:
Activity/Lab
Author:
Lindsay
02/20/2023
Some Rights Reserved
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0.0 stars

This problem with multiple solutions offers an opportunity for students to practice simple addition and subtraction, work with number sentences (equations), and develop systematic work habits. Given cards containing the addition, subtraction and equal signs along with the digits 2, 4, 6, and 8. solvers are challenged to find as many ways as possible to arrange some or all seven cards to create true statements. The Teachers' Notes page offers suggestions for implementation, discussion questions, ideas for extension and support, printable cards (pdf) and a link to an interactive Flash applet.

Subject:
Mathematics
Material Type:
Activity/Lab
Interactive
Provider:
NRICH
06/05/2000
Restricted Use
Rating
0.0 stars

This three-act math task utilizes videos and questioning to help students explore addition and subtraction within 20.

Subject:
Mathematics
Material Type:
Activity/Lab
Provider:
GFletchy
Author:
Graham Fletcher
10/25/2022
Conditional Remix & Share Permitted
CC BY-NC-SA
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Students solve 3 digital math addition fact puzzles in order to escape the jungle (1-find their way through the cave, 2-sneak past the sleeping lions to get to the jeep, and 3-opening the treasure chest for the key to the jeep!)

Thumbnail Image Citation: Bouwhuis, Laura. "Escape the Jungle" Google Sites, 12 July 2022, https://sites.google.com/alpinedistrict.org/escapethejungle/home

Subject:
Elementary Mathematics
Mathematics
Material Type:
Assessment
Game
Homework/Assignment
Interactive
Author:
Laura Bouwhuis
07/12/2022
Some Rights Reserved
Rating
0.0 stars

This card game reinforces counting forward and backward within 20. It can be played by 2-6 players with six sets of cards numbered 1 to 20 (printable download included). The object of the game is to build up six stacks in the middle of the table, face up, in order from 1 at the bottom to 20 on the top. Each player in turn plays cards, according to specified rules, onto opponents' face-up piles or onto a center stack until no more plays are possible. The first player to get rid of all his/her cards is the winner. The game could also be played with ordinary playing cards.

Subject:
Mathematics
Material Type:
Activity/Lab
Game
Provider:
NRICH
Author:
NRICH