copy a set of continuous values from one location to another in MIPS assembly

Question

I am trying to achieve the following via MIPS assembly:

for(int i=0; i<n ; ++i){
   arr2[i] = arr1[i];
}

• $t2 stores the address of starting point of arr1 and $t3 stores the starting point of arr2
• $t1 stores the value n upto which the loop runs.

My assembly code is as follows:

#save the value of $t2 and $t3
move $t8, $t2
move $t9, $t3

#init i=0
move $s7, $zero

copyArrayLoop:  beq $s7, $t1, endCopyLoop
        sw $t2, 0($t3)
        addi $t2, $t2, 4
        addi $t3, $t3, 4
        addi $s7, $s7, 1  
        j copyArrayLoop

endCopyLoop: move $t2, $t8
         move $t3, $t9

however, this copies the address of values stored at $t2 as it increments, and not the value in memory at address denoted by $t2, can anyone point what's going wrong here?