 
                 <div className="word-checkboxes">
                   <label className="checkbox">
-                    <input type="checkbox" checked={term.isLemma} /> Lemma
+                    <input type="checkbox" checked={term.isLemma} onChange={this.handleIsLemmaChanged} /> Lemma
                   </label>
                   &nbsp;&nbsp;
                   <label className="checkbox">

                {isFirst ? null :
                <div className="interval">
                  <h6>Interval</h6>
                  <input type="text" className="interval" value={term.min} /> min<br />
                  <input type="text" className="interval" value={term.max} /> max
                </div>
                }


    handleTermChanged: React.PropTypes.func.isRequired


  changeTerm: (attribute, event) ->
    changedTerm = {}
    changedTerm[k] = @props.term[k] for k of @props.term  # clone the old term
    changedTerm[attribute] = event.target.value
    @props.handleTermChanged(changedTerm, @props.termIndex)

  handleTextChanged: (e) -> @changeTerm('word', e)

  handleMinChanged: (e) -> @changeTerm('min', e)

  handleMaxChanged: (e) -> @changeTerm('max', e)

  handleIsLemmaChanged: (e) -> @changeTerm('isLemma', e)

  render: ->
    {term, queryHasSingleTerm, isFirst, isLast} = @props
