4th grade teachers continue to use ClassDojo to monitor student behavior and IXL for formative math assessments and homework. We use kidblog.org for book talks. The app ScreenChomp is used to record students explaining how they solve math problems. Spellingcity.com is used for Words Their Way practice.
For summative assessments of personal narratives in writing, some groups are using bitstripsforschools.com to publish their writing.