Plants are All Around Us-How Many Little Seeds Math Task Activity #1

Lesson:

Activity Description: 

Students explore the concept of addition and subtraction combining and dividing seeds in a pot. Students pretend to be busy gardeners, adding seeds to the pot to plant and grow, or hungry birds, swooping down from high above to subtract seeds from the pot to eat.

Objective: 

Students will help the teacher build a large number line on the floor and learn how to use as a tool to explore various mathematical concepts. 

Educational Standards: 

PK.OA.1 Demonstrates an understanding of addition and subtraction by using objects, fingers, and responding to practical situations (e.g. if we have 3 apples and add two more, how many do we have all together?). 

PK.CC.4 Count to answer “how many?” questions about as many as 10 things arranged in a line, a rectangular array, or a circle, or as many as 5 things in a scattered configuration; given a number from 1-10, count out that many objects. 

Doing the Activity: 

This Activity is found on Page 5 of the PDF below.

Materials: 
  • Number lines can be used in pre-k to demonstrate: one-to-one correspondence, counting forwards and backwards, counting on, and as a model of addition and subtraction. 
  • Create a large number line on the floor and play movement games with your students! 
  • Invite students to help you create a large horizontal line on the floor with tape. 
  • Write the numbers 0-10 on index cards or Post-its 
  • Attach the numbers just below the line from left to right with equal space in between. 
  • Encourage students to help by writing the numbers 0-10 on paper, or by sequencing the numbers. 
  • Please note that if the number zero is new to your students, explore the concept by adding items and then subtracting all of the items until there is none left. 
Time: 
15-20 minutes as a center time activity
Source: 
The New York City Department of Education via OERCommons, www.oercommons.org