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Are you looking for a READY TO GO, NO-PREP engaging lesson or activity to keep your students on-task while you get baseline testing for your students? This back to school math mystery crack the code is perfect for you …. PRINT AND GO! Students will enjoy solving clues to this 1st and 2nd grade review skills in this Who Done It Mystery!
Available in color and black & white.
The Case of the Missing Supplies is about a student who thought they could take supplies home with him/her to use. The problem is, he/she took them off another student’s desk! Who did it? Students must use their math skills to eliminate suspects so they can find out took the missing supplies!
Math Skills Addressed:
★ Ten More/Ten Less 2-digit
★ Comparing 2-digit numbers < >
★ Place Value blocks with 3-digit numbers
★ Missing addends to 20
★ Expanded Form 2-digit
★ Number Order
★ Adding Three Numbers
Preparation
✓ PRINT AND GO! Staple all included pages in ANY order!
✓ Easy student understanding
How can I use this product?
• Independent work, group work, partners, sub tubs, math centers, early finishers or homework. The possibilities are endless!
• Use individually or as a packet.
How long will this activity take?
This activity is intended to be review. I would review the skills quickly before passing out the math mystery. I prefer to do these packets in partners. For me, it can take my class anywhere from 45 minutes to and hour on average. For back to school, the timing may take a bit longer until students understand the format.
20 pages included – 6 grayscale version, 6 color version, 6 answer keys
Back to School Math Mystery | Crack the Code Math | Who Done It Mysteries
$3.00
Grades: 1st – 3rd
Subject: Math
Format: PDF
Total Pages: 22
Answer Key: Included
Teaching Duration: 90 minutes
Common Core Standards:
CCSS1.NBT.A.1
Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral.
CCSS1.NBT.B.2
Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
CCSS1.NBT.B.2b
The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.
CCSS1.NBT.B.3
Compare two two-digit numbers based on meanings of the tens and ones digits, recording the results of comparisons with the symbols >, =, and <.
CCSS1.NBT.C.5
Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
CCSS2.NBT.A.1
Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases:
CCSS1.OA.D.8
Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = ▯ – 3, 6 + 6 = ▯.
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Chrissy Christian –
This resource was exactly what I needed to make reviewing math skills both fun and meaningful for my students.
-Mary Beth R.
Chrissy Christian –
I used this for a group of students that were ahead. They went out with a parapro and worked on this. They loved it.
-Michelle K.
Chrissy Christian –
This is a great resource for reviewing the concept and as a team building activity.
-Lourdes L.